Similar to トレミーの定理

Arzelà–Ascoli theorem

Apollonius point

Five lemma

Apollonius's theorem

Euler's formula

Carathéodory's theorem (convex hull)

Cauchy's mean value theorem

Schiffler point

Sylvester–Gallai theorem

Stewart's theorem

Thales's theorem

Ceva's theorem

Newton's theorem (quadrilateral)

Annales de Gergonne

P-adic Teichmüller theory

RSA cryptosystem

Vieta jumping

Witch of Agnesi

Abelian group

Category of abelian groups

Abelian category

Abelian variety

Abel's theorem

Abel equation

Abel–Jacobi map

Abel–Ruffini theorem