Origami Star 2

Author:Arthur Lee

Make a cut-out along JK through all the flaps. Unfold the paper to get a star. Modify the cut to make other shapes. If angle GOA is not one-fifth of a straight angle, how would the symmetry be affected? (Drag Q to check.)

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bewijs stelling van Pythagoras
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Conway Circle Theorem

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pendule moins brut
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