David Joyce’s version of *Euclid’s Elements* which is a mathematical and geometric treatise consisting of 13 books written by the ancient Greek mathematician Euclid in Alexandria c. 300 BC.

**Description**

I’m creating this version of Euclid’s Elements for a couple of reasons. The main one is to rekindle an interest in the Elements, and the web is a great way to do that. Another reason is to show how Java applets can be used to illustrate geometry. That also helps to bring the Elements alive.

**Table of Contents**

- The fundamentals of geometry: theories of triangles, parallels, and area
- Geometric algebra
- Theory of circles
- Constructions for inscribed and circumscribed figures
- Theory of abstract proportions
- Similar figures and proportions in geometry
- Fundamentals of number theory
- Continued proportions in number theory
- Number theory
- Classification of incommensurables
- Solid geometry
- Measurement of figures
- Regular solids

**Book Details**