In his book Sacred Geometry, Robert Lawlor looks at the history of geometry and its links with art, architecture, philosophy and religion. The book includes nine workbooks, which are listed here. Some parts are illustrated with dynamic geometry.

1) The square cut by its diagonal; \/2

2) The \/3 and the Vesica Piscis

3) The \/5

4) Alternation

5) The Golden Proportion

6) Gnomonic spirals

7) Squaring the circle

8) Geometry and music

9) The platonic solids