Proving the converse of the pythagorean theorem means proving that if the                of the squares of the lengths of the                sides of a triangle equals the square of the length of the                        side, then the triangle is a right triangle. shorter longest sum product square similar congruent

Step by step explanation pls for 10 pts the length of a rectangular board is 3 feet less than twice its width. a second rectangular board is such that each of its dimensions is the reciprocal of the corresponding dimensions of the first rectangular board. if the perimeter of the second board is one-fifth the perimeter of the first, what is the perimeter of the first rectangular board?