Follow the diagrams to make this patchwork piece, based on an
octagon in a square.
Generate three random numbers to determine the side lengths of a triangle. What triangles can you draw?
Can you explain why it is impossible to construct this triangle?
Here is a chance to create some attractive images by rotating
shapes through multiples of 90 degrees, or 30 degrees, or 72
What is the total area of the first two triangles as a fraction of
the original A4 rectangle? What is the total area of the first
three triangles as a fraction of the original A4 rectangle? If. . . .