The wonder book of geometry: a mathematical story

Getting started

Euclid's Elements : Euclid, 1732

Thales' theorem : the mathematical world of ancient Greece

Geometry in action

Pythagoras' theorem

'In love with geometry'? : 371 proofs of Pythagoras

"Imagine my exultation, Watson..."

Congruence and similarity : the golden ration

Conversely...

Circle theorems

Off at a Tangent

From tangents to supersonic flow : Galileo and Thales' theorem

What is pi, exactly?

The story of the ellipse

Geometry by coordinates : Inspector Euclid investigates...

Geometry and calculus

A royal road to geometry?

Unexpected meetings

Ceva's theorem : some further slices of Pi

A kind of symmetry

'Pyracy' in Woolwich?

Femat's problem

A soap solution

Geometry in The Ladies' Diary : Euclid, 1847

What Euclid did

Euclid on parallel lines : proof by picture?

'A new theory of parallels'?

Anti-Euclid?

When geometry goes wrong...

New angles on geometry

And finally...