Difference between revisions of "Parallelogram"
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(extended with properties) |
(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. | ||
| − | + | The set of [[rhombus|rhombuses]] is a subset of the set parallelograms. | |
[[category:geometry]] | [[category:geometry]] | ||
Revision as of 23:02, April 27, 2007
A parallelogram is a 4-sided polygon with opposite sides parallel.
It has the following properties:
- Opposite sides are equal
- Diagonals bisect each other
- Opposite angles are equal
- Adjacent angles sum to 1800
- It has rotational symmetry of order at least 2.
The set of rhombuses is a subset of the set parallelograms.