T H E E L E M E N T S	Book IV   Proposition 15
	I say that the hexagon ABCDEF is equilateral and equiangular. For, since     the point G is the center of the circle ABCDEF,     GE is equal to GD. Again, since     the point D is the center of the circle GCH,     DE is equal to DG.     But GE is was proved equal to DG therefore     GE is also equal to ED; therefore     the triangle EGD is equilateral.
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