Cut an awkward quadrilateral and prove that it still tiles
What you needCard, scissors, a protractor and a large sheet of paper. Work in pairs.
MethodDraw the most awkward four-sided shape you can. Measure its angles and check they add to 360. Cut it out and use it as a template for about twenty copies.
The key instructionYou are allowed to turn the template over and rotate it, and you will have to. Mark the four corners with different letters first.
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