An equilateral triangle cannot be dissected into finitely many incongruent equilateral triangles.
An equilateral triangle cannot be dissected into finitely many incongruent equilateral triangles.
等边三角形不能分成有限多个不全等的等边三角形。
An equilateral triangle cannot be dissected into finitely many incongruent equilateral triangles.
等边三角形不能分成有限多个不全等的等边三角形。