Hypotenuse

A hypotenuse is the longest leg of a right triangle, i.e., the one across from the 90 degree corner. The “many cheerful facts” alludes to the Greek philosopher and mathematician Pythagoras (582-507 B.C.) and his theorem, which states that you can find the square of (the length of) the hypotenuse by summing the squares of the lengths of the other two sides.

Act: 
Act I