Add 3 matchsticks to the layout to divide it into 2 parts equal in shape and size.
Draw a clock face with the numbers 1 to 12 in their usual positions. Can you draw a line so that the numbers on one side of it add up to five times the numbers on the other side?
Add 4 matchsticks to divide the triangle into 3 equal parts. The 3 parts may differ in shape but must be equal in size.