To state a theorem and then to show examples is literally to teach backwards.
Geometry has two great treasures; one is the Theorem of ; the other, the division of a line into extreme and mean ratio. The first we may compare to a measure of gold; the second we may name a precious jewel. Johannes Kepler - Pythagoras
I'm very well acquainted too with matters mathematical, I understand equations, both the simple and quadratical, About binomial theorem I'm teeming with a lot of news-- With many cheerful facts about the square of the hypotenuse.
I'm like the Pythagorean theorem. Not too many people know the answer to my game.