plane geometry

This book explores prisms, three-dimensional solid figures, named according to their bases.

Explains the principles of plane geometry and includes practice exercises, answers, and model problems.

Tells the story of phi, the never ending, never repeating number known as the Golden Ratio, written as 1.6180339887..., looking at how it has been used, and claims about its use, throughout the history of mathematics.

Tells the story of phi, the never ending, never repeating number known as the Golden Ratio, written as 1.6180339887..., looking at how it has been used, and claims about its use, throughout the history of mathematics.