Books VIII and IX of Euclid's Elements analyze geometric progressions and give several of their properties. A geometric progression gains its geometric character from the fact that the areas of ...

“I keep waiting for that to happen to me and it never has,” the mathematician Jordan Ellenberg confesses in his unreasonably entertaining new book, “Shape,” with its modest subtitle ...

THIS little book contains a series of elementary exercises in geometry based on the method of allowing the pupil to deduce as many principles as possible after, and from the results of ...