Add 2 matchsticks to form 10 triangles. The matchsticks may overlap and do not have to be flat on the surface.
See below: 1, 2, 3, 4 are small ones and the rest are bigger- combination including them 4
Add 4 matchsticks to divide the triangle into 3 equal parts. The 3 parts may differ in shape but must be equal in size.
Arrange the 6 matchsticks to form 4 equilateral triangles with an edge length equal to that of a single matchstick. Hint: you are allowed to use glue.
Add 3 matchsticks to the layout to divide it into 2 parts equal in shape and size.
Here is a hexagon using 6 matchsticks. Move 4 matchsticks to create 2 triangles.
