Triangle Trouble
Geometry
Level
2
The diagram shows an equilateral triangle of side length \(3\text{ cm}\), made by tessellating smaller equilateral triangles of side length \(1\text{ cm}\). How many such \(1\text{ cm}\) triangles would a larger equilateral triangle of side length \(1.25\text{ m}\) contain?
by
Fin Moorhouse