don steward
mathematics teaching 10 ~ 16

Saturday, 9 October 2010

Penrose, kites and darts

a kite and a dart (arrowhead) fit together to make a rhombus
find relationships between the angles in the kite and in the arrowhead

actually in Penrose's tiles the smallest angle in the kite is 36 degrees and the dart has three equal angles

what are the other angles?

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