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HeptagonsTHINGS TO DOYou should have two acute and three obtuse Isotiles.On the left is a regular heptagon: seven equal sides and seven equal angles. Can you put all five Isotiles together, so that you also make a heptagon? It will obviously not be a regular heptagon, as not all sides or angles will be equal. It is a difficult shape to make with Isotiles, so the clue is that two angles are reflex. Work out the sum of all seven angles of this shape, by adding together all the angles of the Isotiles. |
