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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In geometry, polygons are associated into pairs called duals, where the vertices of one correspod to the edges of the other. Regular polygons are self-dual. The dual of a isogonal (vertex-transitive) polygon is a isotoxal (edge-transitive) polygon. For example, the (isogonal) rectangle and (isotoxal) rhombus are duals. In a cyclic polygon, smaller angles correspond to shorter sides, and bigger angles to bigger sides further, congruent sides in the original yield…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. In geometry, polygons are associated into pairs called duals, where the vertices of one correspod to the edges of the other. Regular polygons are self-dual. The dual of a isogonal (vertex-transitive) polygon is a isotoxal (edge-transitive) polygon. For example, the (isogonal) rectangle and (isotoxal) rhombus are duals. In a cyclic polygon, smaller angles correspond to shorter sides, and bigger angles to bigger sides further, congruent sides in the original yield congruent angles in the dual, and conversely. For example the dual of an acute isosceles triangle is an obtuse isosceles triangle.