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Matter of Scale

Prove Pythagoras Theorem using enlargements and scale factors.

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Follow instructions to fold sheets of A4 paper into pentagons and assemble them to form a dodecahedron. Calculate the error in the angle of the not perfectly regular pentagons you make.

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Curvy Areas

Have a go at creating these images based on circles. What do you notice about the areas of the different sections?

Pythagoras Puzzler

Stage: 4 Challenge Level: Challenge Level:1

Joined squares with construction lines