Editing Similarity (geometry) (section)

==Other similar polygons==
[[File:SimilarRectangles.svg|thumb|Similar rectangles]]
The concept of similarity extends to [[polygon]]s with more than three sides. Given any two similar polygons, corresponding sides taken in the same sequence (even if clockwise for one polygon and counterclockwise for the other) are [[proportionality (mathematics)|proportional]] and corresponding angles taken in the same sequence are equal in measure. However, proportionality of corresponding sides is not by itself sufficient to prove similarity for polygons beyond triangles (otherwise, for example, all [[rhombus|rhombi]] would be similar). Likewise, equality of all angles in sequence is not sufficient to guarantee similarity (otherwise all [[rectangle]]s would be similar). A sufficient condition for similarity of polygons is that corresponding sides and diagonals are proportional.

For given {{mvar|n}}, all [[regular polygon|regular {{mvar|n}}-gons]] are similar.