Computable Euclid

Euclid Book 4

Book 4 concerns constructions inside and outside of a circle. Propositions 2-5 are △ in ◯, △ around ◯, ◯ in △ and ◯ around △. Later constructions handle polygons with 4, 5, 6, and 15 sides.

• Definitions

• Euclid Book 4 Proposition 1

  

• Euclid Book 4 Proposition 2

  

• Euclid Book 4 Proposition 3

  

• Euclid Book 4 Proposition 4

  

• Euclid Book 4 Proposition 5

  

• Euclid Book 4 Proposition 6

  

• Euclid Book 4 Proposition 7

  

• Euclid Book 4 Proposition 8

  

• Euclid Book 4 Proposition 9

  

• Euclid Book 4 Proposition 10

  

• Euclid Book 4 Proposition 11

  

• Euclid Book 4 Proposition 12

  

• Euclid Book 4 Proposition 13

  

• Euclid Book 4 Proposition 14

  

• Euclid Book 4 Proposition 15