Does it matter which sides you choose for a, b, c in a right triangle, when applying the pythagorean theorem? Algebra Radicals and Geometry Connections Pythagorean Theorem and its Converse 2 Answers mason m · Ben Mai Nov 13, 2014 Side A and B does not matter when your trying to apply this to the pythagorean theorem but side C must always be the hypotenuse. The hypotenuse is always the triangle's longest side. It is opposite the right angle. I hope this helps. Tony B Jan 12, 2016 You must be aware that the sides of a triangle are not always designated as A,B and C. It is imperative that you have #("adjacent")^2+("opposite")^2=("hypotenuse")^2# Related questions How do you use the pythagorean theorem? How is the pythagorean theorem related to the distance formula? How do you apply the pythagorean theorem in word problems? What is the converse of the Pythagorean theorem? What are some real life examples of the pythagorean theorem? How do you determine whether or not a triangle with sides of lengths 5, 6 and 8 forms a right ... How do you solve for the missing side, c, of a right triangle if #a=12# and #b=16#? How do you find the lengths of the three legs of the triangle if one leg of a right triangle is 3 ... How do you find the length of the diagonal of the cookie sheet if Maria has a rectangular cookie ... How do you solve #8^2 + x^2 = 12^2 #? See all questions in Pythagorean Theorem and its Converse Impact of this question 5873 views around the world You can reuse this answer Creative Commons License