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Egyptian Rope

Age 7 to 11
Challenge Level


The ancient Egyptians were said to make right-angled triangles using a rope which was knotted to make twelve equal sections.

 

 

If you have a rope knotted like this, what other triangles can you make? (You must have a knot at each corner.)

What regular shapes can you make - that is, shapes with equal length sides and equal angles?

 

Click here for a poster of this problem.