MathDB
every equilateral triangle can be divided into n>=6 equilateral triangles.

Source: 2020 Malaysia IMONST Round 2 Junior 2

September 22, 2021
geometrycombinatorial geometrycombinatoricsequilateralsEquilateral

Problem Statement

Prove that for any integer n6n\ge 6 we can divide an equilateral triangle completely into nn smaller equilateral triangles.