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Shadow Play

Here are shadows of some 3D shapes. What shapes could have made them?

Skeleton Shapes

Stage: 1 Challenge Level: Challenge Level:2 Challenge Level:2

It might help to use real shapes so that you can count the number of edges and vertices (corners) they have.
How many edges does the first shape have? So how many straws would be needed?
How many vertices does it have? So how many balls of modelling clay would we need to make it?
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