Similar to カラテオドリの定理_(凸包)

Disk covering problem

Kakeya set

Sphere packing

Guillotine cutting

Honeycomb (geometry)

Arc (projective geometry)

Centroidal Voronoi tessellation

Kissing number

Moving sofa problem

Thomson problem

Delaunay triangulation

Kobon triangle problem

Voronoi diagram

Minkowski's theorem

Finite geometry

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

Tree of primitive Pythagorean triples