Similar to テボーの定理

Kosnita's theorem

Conway circle theorem

Simson line

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Proof that 22/7 exceeds π

Proof that π is irrational

Interesting number paradox

Open mapping theorem (complex analysis)

Rank–nullity theorem

Gauss's lemma (number theory)

Angle bisector theorem

Leibniz formula for determinants

Locally connected space

Coupon collector's problem

Casey's theorem

Kőnig's lemma

Primitive Pythagorean triple

Mean value theorem (divided differences)