Number the Triangles from 1 to 5, with 1 being the left and 5 being the right. Affected triangles will "flip", filling the triangle if its empty or emptying the triangle if it's full.
Clicking Triangle:
- ONE will flip Triangles 1, 2, 3.
- TWO will flip Triangles 1, 2, 3, 4.
- THREE will flip Triangles 1, 2, 3, 4, 5.
- FOUR will flip Triangles 2, 3, 4, 5.
- FIVE will flip Triangles 3, 4, 5.