1. (20 points) Below every statement put a "T", if the statement is true, or an "F", if the statement is false. O According to the definitions in Euclid's Elements, Book X, v2 and v3 are commensurable, but are not commensurable in square. O Euclid's five postulates provide the axiomatic grounds for physical draw- ings of regular polyhedra, but not for conic sections. O Anthyphairesis procedure provides a way to classify real numbers into rational and irrational. O Let S be a fixed, definitive geometric statement. Archimedes used calculus- like, non-geometric (in the Euclidean sense) methods to prove S in his Method. O Statements equivalent to the quadratic formula in one form or another have been known at least since Babylonians