Category:証明を含む記事

Ptolemy's theorem

Stewart's theorem

Bézout's identity

Casey's theorem

Law of cotangents

Law of sines

Interesting number paradox

Angle bisector theorem

Sylvester–Gallai theorem

Lexell's theorem

Kempner series

Diagonal lemma

Helly's theorem

Pappus's area theorem

Seven circles theorem

Newton's theorem (quadrilateral)

Sz.-Nagy's dilation theorem

Open mapping theorem (complex analysis)

Gauss's lemma (number theory)

Carathéodory's theorem (convex hull)

Mean value theorem (divided differences)

Hardy–Littlewood inequality

Apollonius's theorem

Banach–Alaoglu theorem

Routh's theorem

Petr–Douglas–Neumann theorem

Apollonius point