Table of Contents

Prematter
Introduction
Using the Geometry Applet
About the text
Euclid
A quick trip through the Elements
References to Euclid’s Elements on the Web
Subject index
Book I. The fundamentals of geometry: theories of triangles, parallels, and area.
Definitions (23)
Postulates (5)
Common Notions (5)
Propositions (48)

Book II. Geometric algebra.
Definitions (2)
Propositions (13)

Book III. Theory of circles.
Definitions (11)
Propositions (37)

Book IV. Constructions for inscribed and circumscribed figures.
Definitions (7)
Propositions (16)

Book V. Theory of abstract proportions.
Definitions (18)
Propositions (25)

Book VI. Similar figures and proportions in geometry.
Definitions (11)
Propositions (37)
Book VII. Fundamentals of number theory.
Definitions (22)
Propositions (39)

Book VIII. Continued proportions in number theory.
Propositions (27)

Book IX. Number theory.
Propositions (36)

Book X. Classification of incommensurables.
Definitions I (4)
Propositions 1-47
Definitions II (6)
Propositions 48-84
Definitions III (6)
Propositions 85-115

Book XI. Solid geometry.
Definitions (28)
Propositions (39)

Book XII. Measurement of figures.
Propositions (18)

Book XIII. Regular solids.
Propositions (18)