Proof: if the square of two sides of a triangle is equal to the square of the third side, then the triangle is a right triangle Known: Verification: prove:

Proof: if the square of two sides of a triangle is equal to the square of the third side, then the triangle is a right triangle Known: Verification: prove:

This is using the Pythagorean theorem
Because the square of a + the square of B = the square root of C
For example, the length of 3, 4 and 5 sides is a right triangle