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Experiment with colouring in different sections to make
particular shapes. How could you make a regular octagon?
Try finding as many different triangles as you can - this may help
you to see what can be done.
Penta people, the Pentominoes, always build their houses from five square rooms. I wonder how many different Penta homes you can create?
Can you make these equilateral triangles fit together to cover the paper without any gaps between them? Can you tessellate isosceles triangles?