Can you move 4 matchsticks to have 6 equilateral triangles?
Move 4 matchsticks to create 5 triangles, the triangles don't have to be equal in size.
Here we have 2 triangles, with the small one inside the large one. Can you move 3 matchsticks to have 4 triangles?
Can you move 3 matchsticks to have 4 triangles?
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.
MOVE four matchsticks to convert the ship into eight triangles.
The triangles may differ in size and all matchsticks don't have to be flat on the surface.