Difference between revisions of "Parallelogram"
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The set of [[rhombus]]es (rhombi) is a subset of the set parallelograms. | The set of [[rhombus]]es (rhombi) is a subset of the set parallelograms. | ||
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Latest revision as of 17:13, July 13, 2016
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.
- Its area is equal to its base multiplied by its vertical height
The set of rhombuses (rhombi) is a subset of the set parallelograms.