It doesnt have a specific title. But i feel that it covers the pythagorean proofs of Theaetetus :)
Chat with our AI personalities
compositions
The thirteenth book in Euclids Elements has no specific title, but covers the Pythagorean proofs of Theaetetus (c. 417-369 bc) and the construction of the five regular Platonic solids (pyramid, cube, octahedron, dodecahedron, icosahedron) inside a given sphere.
There are 13 books in Euclid's Elements. The title of Book XIII is " Regular solids."
The book Elements contained axiomic proofs for plane geometry.
Measurement of figures