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.
See below picture
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.
Move 3 matchsticks to create 2 rhombuses. (also known as diamonds) The 2 rhombuses must be equal in size.
Here is a hexagon using 6 matchsticks. Move 4 matchsticks to create 2 triangles.
Here we have 2 triangles, with the small one inside the large one. Can you move 3 matchsticks to have 4 triangles?