Changes

71 bytes added ,  23:02, April 27, 2007
Added rhombus subset
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* It has rotational symmetry of order at least 2.
 
* It has rotational symmetry of order at least 2.
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The set of [[rhombus|rhombuses]] is a subset of the set parallelograms.
    
[[category:geometry]]
 
[[category:geometry]]