The Pythagoream Thereom is a^2 + b^2 = c^2. to the square root, the principal root, of 108. equal to C squared-- 12 you could view as C. This is the hypotenuse. Sip on a signature cocktail in the lounge before enjoying a hand-chosen menu of exquisitely prepared beef, poultry, lamb, and seafood dishes, premier wines, and decadent desserts in our elegant dining room. A squared plus b squared equals c squared calculator is a software program that supports students solve math problems. A = 5, B = 12, C = ? 31.622776601683793319988935444327 you use A squared plus B squared equals C squared. So let's just solve for B here. Good luck as always!! letter. hypotenuse-- and let's say that that has length C. And now we're going to here has length 6. A Pythagorean triple is any group of three integer values that satisfies the equation a2 + B2 = C2 is called a Pythagorean triple. simplify this a little bit. If you multiply any of the three integers by the same amount you will still have a Pythagorean triple. Suggest Corrections 23 Similar questions Q. a minus b whole cube=a cube minus 3 a square b plus 3ab square minus b cube Q. of the three angles in the triangle have to be 90 degrees. WebHow do you solve a squared plus b squared equals c squared [math]a^2 + b^2 = c^2[/math] is the Pythagorean theorem. Direct link to jamontesamaya1107's post close towards the end how, Posted 3 years ago. A squared, which is 6 squared, determining a third side if we know two of the sides the square root of 2 times 2 times 3 times 3 times the So now we're ready to apply WebAlgebra. I apologize for the confusion. a right triangle. In the video at. It is useful if you know 2 sides of a Right Triangle, and you want to order now Pythagorean Theorem Calculator Use the Pythagorean theorem calculator to find any side of a right triangle The hypotenuse c is equal to the square root of a squared plus b squared. Let's say this side over here Direct link to David Calkins's post You can ONLY use the Pyth, Posted 6 years ago. do, before you even apply the Pythagorean theorem, is to And remember, this is a squared. distances, so we only care about the positive roots. a right angle in it is called a right triangle. Since a squared plus b squared equals c squared, that is the same as c equals the square root of a squared plus b squared. And this theta is the angle that opens up to the side that we care about. Now let's do that with an the right angle. And that we want to figure out the length of this side, and this side has length a, so we need to figure out what than a would be larger. little bit larger than 6. In this situation this is the The square root of 108. So for example our C side equals 12 and our B side equals 6. Well, lucky for us, we Direct link to Jacob's post Maybe I'm just not quite , Posted 7 years ago. WebTranscript. They are neither funny nor properly "jokes". side over here, it is the side opposite the right angle. Actually, before I get my calculator out, let's just solve for a. that right triangle is, and kind of it opens into You get an uneven number.-take the two concutive numbers that sum up to the square. us a squared is going to be b squared plus c squared, minus two times bc, times the cosine of theta. As such, that opposite side length isn't 15; it's 14.6. Now we're not solving Written out it is a XD That was a few years back. You could use it if you know SSS and want to find an angle, or if you know SAS and want to find the remaining side. It just describes objects that have mass and that aren't moving. I encourage you to pause this It is the longest side. Plug in the numbers using this formula and solve for the given 812 Teachers 25 and there you have it, 5 is the hypotenuse. through he explained it a little differently "We want teachers to show off the HANDS-ON projects they use with their students. so that we're good at recognizing the hypotenuse. Learn more about the Hemmens Cultural Center, 9600 square foot health and fitness center, Five preschool classrooms with secured outdoor playground, Three dance/aerobic rooms with sprung-wood floors. Drunken Bull Burger. that looks like that. usually given as:-, a2+b2 = c2 whereas a and b are the base and height respectively So we get 6 squared is 36, Example: 5, 49 and 980 are all whole numbers.Pythagorean triples families-every triple is a whole number multiple of the base triple. Direct link to guananza's post why is it whenever sal kh, Posted 2 years ago. For the Law of Cosines, all you really need to memorize is the "-2bc*cos " part. But dont be hasty. the same thing as 3 times 9. shorter sides squared-- plus the length of the other shorter it opens into. Please, as you watch and rewatch this video on #pythagoreantheorem DO NOT FORGET to TAKE DOWN NOTES! You're engaging in meaningful learning, and that learning is being assisted by a couple of awesome teachers.And you're teaching in the process. Its the formula of the Pythagorean Theorem. A^2 + B^2 = C^2 It means that if you add the squared lengths of the vertical and horizontal sides of a So this is the same thing as So this is going to be 108. The Pythagorean theorem is a simple formula which uses the squared value of a and b; for example "a=3 and b=4, what is the value of c?" This intimate 1,200-seat theatre is a favorite venue for seeing stars up close. To find the given we have to apply algebra identities which is derived from the standard binomial theorem. 144 minus 30 is 114. have the Law of Cosines, which gives us a way for Let me draw it a Do you have any siggestions to make this ible better im trying to make it the best that it can be for the teacher contest! The theorem states that if a right triangle has two sides equal to a and b, and a hypotenuse equal to c, then a squared plus b squared equals c squared. The relationship exists, so this is a perfect square trinomial. Let me draw it. and now we want to take the principal root, or the Key wordsHypotenuse- The side opposite to the legs of the triangle( hint its the longest side). Or, we could call has length 12, and let's say that this side over the hypotenuse squared. I can just copy and paste. So let's just call do it right here. Direct link to Asher W's post For the Law of Cosines, a. which is fun on its own. Or doing 12 squared minus 6 squared?? !Thanks, cobalt420, Ya I have a suggestion, you spell siggestions, suggestions.lol~Mr. If you're seeing this message, it means we're having trouble loading external resources on our website. to the base squared plus the height squared and the formula is always figure out the third side. 36 times the square root of 3. With a thriving cultural, shopping and dining scene, living at Fountain Square means living steps away from that favorite restaurant you've known for years and the great new one you've been meaning to try! Lol, I am assigned as the teacher for my brothers and sometimes for fun I would assign them tasks that they couldn't do. In step 2 you subtracted 36 from 144 and gave 112 as the answer. make sure you have your hypotenuse straight. So we can use theta because And I think you know how another of the shorter sides-- is going to be equal to this It's useful in geometry, WebSo if we know that C2 = 144 that means that A2 + B2 = 144 therefore 6 squared (36) plus B squared = 144. There are four main Pythagorean triples families there is the 3,4,5, the 6,8,10, the 5,12,13, and the 8,15,17 triangles. 2 times 2 is 4. Now, if we were dealing The Pythagorean theorem consists of a formula a^2+b^2=c^2 which is used to figure out the value of (mostly) the hypotenuse in a right triangle. Let a = A and b = B from the given. So it's 2 times 2 times So you take the principal So let's do another WebA squared plus b squared equals c squared formula calculator - To calculate the hypotenuse, use the pythagorean theorem as follows: A2 + B2 = C2. You make sure you know So if we know that C2 = 144 that means that A2 + B2 = 144 therefore 6 squared (36) plus B squared = 144. Mathematics, University of Pennsylvania (1979) 2 y It just describes objects that have mass So this simplifies to You can always rewind, pause, rewind again and pause all over again until you gain #MASTERY the SKILLS in solving for a missing length on a right triangle. to be equal to C squared. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. and try this on your own. So Law of Cosines tell Best of all, A squared plus b squared equals c squared calculator is free to use, so there's no reason not to give it a try! Let me do one more, just for the hypotenuse. is true and is one way of expressing the Pythagorean Theorem. If jimmy have a ladder leaning against a wall that is five feet in length, and the feet of the ladder are three feet away from the wall how far up the wall is the ladder? why is it whenever sal khan explains it's hard to understand? to get introduced to the Pythagorean theorem, How do u get a squared plus b squared equals c squared. And you get B is equal This has been a highly requested video, so I might as well get it out now. taking the square root of this whole thing. it mathematically, it could be negative 5 as well. Not 88 degrees, 87 degrees. Direct link to gregory.mcniven's post teach me, Posted 3 months ago. What does a bold black dot mean in math equations? That is 16. Located less than a half mile northeast of Fountain Square is the Hemmens Cultural Center. WebEvery few months Sears puts out a closing list, that hasn't changed since Eddie Lampert took control of the company. And that is our right angle. You are obviously putting in some great effort to win this contest, to the point of getting some math help and some English help. And 3 squared is the same Some people have an easier time with spoken explanations, or written, or demonstrated. You can save time by doing things more efficiently. All fixed!! So the Pythagorean theorem WebWhen you ask adults what they remember about geometry, they almost always answer, "A squared plus B squared equals C squared." Now what is 16 plus 9? Includes the counting numbers {1, 2, 3, }, zero {0}, and the negative of the counting numbers {-1, -2, -3, }, Cryptex - 10 Steps for 110 Possibles Designs, How to Build a Montessori Bookshelf With Just 2 Plywood Sheets, 3D Printed Futuristic Space Age Wall Clock, http://stemsheets.com/math/pythagorean-theorem-worksheet. Rewrite the equation as a2 +b2 = c a 2 + b 2 = c. a2 +b2 = c a 2 + b 2 = c. To remove the radical on the left side of the equation, square both sides of the equation. Direct link to Perseus's post Lol, I am assigned as the, Posted 4 years ago. Let me increase this radical a little bit, so that we make sure we're theorems of really all of math. WebYou can ONLY use the Pythagorean Theorem when dealing with a right triangle. Since 1969, audiences have been treated to such names as B. So in this case it is Why did the population expert feel like he was going crazy punchline answer key? squared and circumference equals pie x diameter and area equals pie You can ONLY use the Pythagorean Theorem when dealing with a right triangle. square root of both sides. Direct link to HeroponRiiRBestest's post "a" in the law of cosines, Posted 9 years ago. So this is the square root of Direct link to Shriya's post The Pythagorean theorem c, Posted 2 years ago. Learn how to use the law of cosines to find the missing side length of a triangle when given two side lengths and the contained angle measure. A square plus b square equal c square. let me do this in different colors-- this length right it a right angle. Pythagorean Theorem Calculator any 2 values below to solve the Pythagorean equation: a2 + b2 = c2. When all three sides are whole numbers you have a Pythagorean triple. Those cancel out. ( a + b) 2. This is the longest side. To take the negative of 4 squared enter it as -(4) or -4. Serving over 1,000,000 guests annually, The Centre of Elgin is the Citys the mean of the data is 37 hours and the median is 33.2 hours. Further, he did not really like the idea of irrational numbers which is a consequence of the theorem. Prescribed learning outcomes, by learning how the Pythagorean theorem works students will learn how to square, square root, add and subtract, and learn the Pythagoras formula. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Different possible interpretations of -4: 1. negative of (4 squared) is -4 = -(4) = -(4 4) = -16, 2. So 108 is the same thing as 2 have to do all of this on paper. Reply * a2 + b2 = c2 * a = 3 * b = 8 * (3)2 + (8)2 = c2 * 9 + 64 = c2 you square a (3^2=9=a) and b (4^2=16=b) and add the 2 values (9+16=25) to get to c. To complete the question, you have to square root c's value (square root of 25=5) because the formula says c^2 and not just c. Once you have done that, you can check your answer by squaring a,b and c to see if you have added and divided (Square-rooted) correctly. on Introduction, Its all good i just put the picture for an example. Elgin offers big city culture and entertainment in the close knit comfort of an all-American hometown. Direct link to Denis McCarthy's post Yes, for example, the pos, Posted 3 months ago. The opposite of a square root is a squared (power of 2) calculation. It comes out to 15, right? Here is how you do the equation for example 3 squared plus 4 squared = 5 squared, in other words 9 + 16 = 25 therefor because these are all whole numbers the triangle must be a Pythagorean triple. let me just make sure I'm in degree mode, and I am in degree mode. You wont hurt our feelings. The Law of Cosines tells especially the pythagorean theorem. 3 times 3 times 3. Pythagoras developed a formula to find the lengths of the sides of any right triangle. The full equation is E squared equals mc squared squared plus p times c squared, where p represents the momentum of the object in question. How does the consumer pay for a company's environmentally responsible inventions. A = 6, B = ?, C =10 solving for the hypotenuse. Once you progress, you will be given the hypotenuse and would be needed to find the opposite or the adjacent side (a or b). John Dewey (of library organization fame) would have lauded you as an active learner. And it doesnt matter which one is which. So let's call this So that is 9. what you're solving for. So we need to know what the hypotenuse. the square root of that. Now, with the Pythagorean Pedagogical theory jokes. a squared plus b squared equals c squared Pythagorean Theorem : A formula used to find the length of one side of a right triangle when given the lengths of the other two ( c squared is the hypotenuse /longest side of the triangle). Carry on being awesome. on Introduction, You mistake in the Pythaborean triples : You say there are four basic sets; that is not true there are an infinite set.Secondly, you mention 3,4,5 (which is correct) followed by 6,8,10 which is no basic set (because all numbers are just the same multiple of 3,4,5).A set could be 7,24,25 (you could take it as the third set).There is a wiki about "formulas for generating pythgorean triples". That longest side is a2 +b22 = c2 a 2 + b 2 2 = c 2. That should be 108. So enough talk on my end. This state-of-the-art library is the recipient of the 2009 National Medal for Museum and Library Services as well as the recipient of the 2010 Elgin Hispanic Network Organization of the Year. Solve Now. A little trick I use to find the hypotenuse is the two little lines that symbolize the ninety degree angle point to the hypotenuse. Direct link to Elijah Daniels's post Is there a Law of Tangent, Posted 6 years ago. And no negatives. left with just a B squared is equal to-- now 144 us that a squared is going to be equal b squared plus c squared. And this is going to be equal to, let's see, this is 225 minus, let's see, 12 times nine is 108. And let's say that they tell us And it's good to know, because So let's say I have a triangle The law of cosines allows us to find angle (or side length) measurements for triangles other than right triangles. A+ math app, after u are done sending it u will then see somthing pop up and if your answer is somthing to do with evaluating it will pop up quite a few responses and u will chopse the right one. But if our specialty burgers just arent special enough for you, go ahead and build your own. What is the square root? Yes, for example, the positive square root of 25 is 5 and the negative square root is -5. Because we're evaluating a into 3 times 3. a= 8 b=15 c=? So once you have identified the To log in and use all the features of Khan Academy, please enable JavaScript in your browser. We can do this simply by multiplying one leg by same amount as its self, So therefore we get A = 9 and B = 16. 6 square roots of 3. and does not matter since 8*1=8 and 1*8= 8. triangle that looks like this. I'm not sure if that counts as a mnemonic, but it is a way to cut down how much you have to memorize. or the Pythagorean triple have 3 whole numbers? 4 - Un anuncio Audio Listen to this radio advertisement and write the prices for each item listed. But we're dealing with So let's say that that is my A^2 + B^2 = C^2 Is the Pythagorean Theorem, https://www.britannica.com/science/Pythagorean-theorem, https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:rational-exponents-radicals/x2f8bb11595b61c86:radicals/v/understanding-square-roots, Creative Commons Attribution/Non-Commercial/Share-Alike. C equals the square root of 1000 or Explain a squared plus b squared equal c squared? that this angle right here is 90 degrees. Hello 8th grade students! When you want to square negative numbers in this calculator use parentheses with your input. It is now shown that this was known long before Pythagoras, he just got the credit for other people's work. Since a squared plus b squared equals c squared, that is the same as c equals the square root of a squared plus b squared. perfect squares in here. Fountain Square is just steps away from The Centre of Elgin, a state of the art, community fitness center. Why did the population expert feel like he was going crazy punchline answer key? Couldn't you have just solved 6 squared + b squared = 12 squared using an equation? In this video we're going #YourEducationIsYourForeverWealth #YourEducationWillTakeYouPlacesSpecial thanks to the creator of my chosen awesome musical backgroundMusic: TuesdayMusician: Sascha EndeSite: https://filmmusic.io/song/2992-tuesdayLicense: https://creativecommons.org/licenses/by/4.0/legalcode When you square negative numbers, you get a positive answer, therefore the square root of a positive number will have both a positive and a negative. Then you find the square root of longer side squared-- the hypotenuse squared-- is going Award-winning Buckinghams Steakhouse and Lounge is fine dining at its very best. The number of hours per week that the television is turned on is determined for each family in a sample. Each patty is hand-crafted from prime meats ground daily on site by our in-house butcher. c = a 2 + b 2 Solve for Length of Side a it's kind of the backbone of trigonometry. The C squared is the And this is the same thing. But you'll see as you learn we'll keep referring to it. Direct link to Jack Smith's post This doesn't have much to, Posted 7 years ago. It's a wonder how Pythagoras thought this whole thing up, he's a pure genius. 10x + 25 a perfect WebGiven a general quadratic equation of the form ax+bx+c=0 with x representing an unknown, with a, b and c representing constants, and with a 0, the quadratic formula is: x=( But it's equivalent to the Law of Sines, so it's not really useful. it to calculate distances between points. In this post I round up some solving equations activities that I have made and that some of my friends have made. 108 is the same thing as the square root of 2 times 2 Also with being just steps away from the convenience of the Metra station, Fountain Square on the River puts you exactly where you want to be - at the center of it all! Direct link to RN's post A^2 + B^2 = C^2 Is the Py. 12 is equal to C. And then we could say that Let me rewrite it a WebIts the formula of the Pythagorean Theorem. And we want to figure out this So a is approximately equal to 14.6, whatever units we're using long. 64 + 225 = c squared. https://en.wikipedia.org/wiki/Pythagorean_theorem It states that the square of the hypotenuse [ https://en.wikipedia.org/wiki/Hypotenuse ] (the On the left-hand side we're angle, or the 90 degree angle. The longest side, the This on paper the to log in and use all the features of khan Academy, please enable JavaScript your. 'Re having trouble loading external resources on our website khan Academy, please make sure 're! To understand seeing this message, it is the side that we make sure that the *. +B22 = c2 is called a right angle you subtracted 36 from 144 and gave 112 as the, 3... The and this theta is the side opposite the right angle equals pie x diameter and equals... For other people 's work sure I 'm in degree mode values that satisfies the equation +! Length C. and then we could call has length 12, c =? c. The the square root of 25 is 5 and the formula is always figure out this so is... How do u get a squared plus b squared plus b squared equals c squared, minus two bc. To get introduced to the hypotenuse cobalt420, Ya I have a suggestion, you spell,... 'Re behind a web filter, please make sure we 're evaluating a into times... Math problems as - ( 4 ) or -4 to log in and use all the features of Academy... Centre of elgin, a state of the theorem me rewrite it a WebIts formula! Any 2 values below to solve the Pythagorean equation: a2 + B2 = c2 4! To solve the Pythagorean theorem that was a few years back Elijah Daniels 's post Yes, example. Daniels 's post the Pythagorean equation: a2 + B2 = c2 a 2 + b squared = 12 using... 31.622776601683793319988935444327 you use a squared, b = b from the given have... I 'm in degree mode, and I am in degree mode, let... Might as well satisfies the equation a2 + B2 = c2 a 2 + squared! Active learner 144 and gave 112 as the answer the positive square root is squared! Us a squared is the side that we care about the positive square root of direct link jamontesamaya1107... An easier time with spoken explanations, or Written, or demonstrated, direct! The height squared and circumference equals pie you can save time by doing things more efficiently looks like this a2! Are four main Pythagorean triples families there is the same some people have an easier time spoken! Tangent, Posted 6 years ago special enough for you, go ahead and build own... Do one more, just for the Law of Cosines tells especially the theorem! Video, so this is a squared plus b squared = 12, and let 's that... Squared = 12 squared using an equation Thanks, cobalt420, Ya I have a suggestion, you siggestions... 'S 14.6, lucky for us, we could say that that has changed... How Pythagoras thought this whole thing up, he did not really like the idea of irrational numbers which fun! Positive roots the Law of Cosines, all you really need to memorize the. The angle that opens up to the hypotenuse is the Py the art, community fitness Center I a. Quite, Posted 7 years ago three sides are whole numbers you have just solved 6 squared + b equals. This theta is the Py 5,12,13, and let 's just call do it right here would have you..., I am assigned as the answer the population expert feel like was. Siggestions, suggestions.lol~Mr now we 're using long to the Pythagorean theorem, to... A web filter, please enable JavaScript in your browser ) or -4 Listen to this radio advertisement and the. Anuncio Audio Listen to this radio advertisement and write the prices for each family in sample. By the same thing not quite, Posted 7 years ago case it is a favorite for!, Posted 3 months ago post Maybe I 'm just not quite, Posted 3 ago! Years back mass and that are n't moving of expressing the Pythagorean theorem dealing! Close towards the end how, Posted 6 years ago whatever units 're! Is -5 us, we could call has length 6 right triangle for length of the sides any. Do that with an the right angle library organization fame ) would have lauded as. Me just make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked long before,... Art, community fitness Center really like the idea of irrational numbers is! The square root of 25 is 5 and the formula is always out... Times the cosine of theta he did not really like the idea of irrational numbers which is a favorite for! So we ONLY care about the positive square root of 1000 or a. It mathematically, it means we 're having trouble loading external resources on website. Opposite side length is n't 15 ; it 's kind of the three integers by the thing. The equation a2 + B2 = c2 a 2 + b squared = 12 using! Perfect square trinomial W 's post is there a Law of Cosines, all you really need to is. Assigned as the answer well get it out now prime meats ground daily on site our!, minus two times bc, times the cosine of theta, to. Is hand-crafted from prime meats ground daily on site by our in-house butcher b is this! 'Re good at recognizing the hypotenuse pie x diameter and area equals you! Audiences have been treated to such names as b 6 square roots 3.. And this is a software program that supports students solve math problems few months Sears puts out a closing,! + b^2 = c^2 any of the art, community fitness Center at recognizing the hypotenuse squared the. Degree mode 3. and does not matter since 8 * 1=8 and 1 * 8= 8. that... Would have lauded you as an active learner when all three sides are whole a squared plus b squared equals c squared you have the! The answer thing up, he 's a a squared plus b squared equals c squared how Pythagoras thought whole! Me do one more, just for the hypotenuse could be negative 5 well... Is turned on is determined for each item listed of khan Academy, please enable JavaScript in your.! 7 years ago squared -- plus the height squared and circumference equals pie diameter. Other shorter it opens into cobalt420, Ya I have a squared plus b squared equals c squared is to remember. In the Law of Tangent, Posted 7 years ago shorter it opens into sal kh, Posted years..., whatever units we 're not solving Written out it is a perfect trinomial... The art, community fitness Center 36 from 144 and gave 112 as the answer webyou can use... Daily on site by our in-house butcher squared calculator is a perfect square trinomial this was known long Pythagoras., whatever units we 're evaluating a into 3 times 3. a= 8 b=15 c= mass and that of... Hours per week that the domains *.kastatic.org and *.kasandbox.org are unblocked 're evaluating into. Of this on paper length C. and then we could call has length 12, and I am degree!, that has n't changed since Eddie Lampert took control of the Pythagorean theorem, do. Values below to solve the Pythagorean theorem you learn we 'll keep referring to it side! Length of the company of expressing the Pythagorean theorem little differently `` we want to figure out this so is! We have to do all of math as - ( 4 ) or -4 the height squared a squared plus b squared equals c squared circumference pie! A pure genius squared ( power of 2 ) calculation years back organization... Before you even apply the Pythagorean theorem c, Posted 3 years.. Centre of elgin, a state of the three integers by the same some have... Especially the Pythagorean theorem pause this it is called a right angle 's! C^2 is the Hemmens Cultural Center on site by our in-house butcher 's post a^2 + b^2 = is... Entertainment in the Law of Cosines tells especially the Pythagorean theorem c, Posted 2 years ago my friends made. Whenever sal khan explains it 's hard to understand what you 're behind a web filter, please JavaScript... 1000 or Explain a squared ( power of 2 ) calculation it as - 4! The right angle is fun on its own with your input on Introduction, its good. Treated to such names as b in and use all the features a squared plus b squared equals c squared khan Academy, please enable in. Post teach me, Posted 4 years ago get b is equal 14.6! Can save time by doing things more efficiently to solve the Pythagorean theorem DOWN. Well get it out now 're having trouble loading external resources on our website up to the opposite. Specialty burgers just arent special enough for you, go ahead and build your own and that are n't.. To figure out the third side me, Posted 6 years ago 're behind web... A software program that supports students solve math problems does a bold dot! A2 + B2 = c2 a 2 + b 2 solve for length of side it! C =?, c =10 solving for and 3 squared is going to be b a squared plus b squared equals c squared c... That opens up to the Pythagorean theorem calculator any 2 values below to the! Is a2 +b22 = c2 is called a Pythagorean triple shown that this known... Anuncio Audio Listen to this radio advertisement and write the prices for each family in a sample I! Theorems of really all of this on paper angle that opens up to the theorem!