Difference between revisions of "Rectangle"
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* Diagonals are equal | * Diagonals are equal | ||
* Adjacent sides are perpendicular | * Adjacent sides are perpendicular | ||
| + | * Area = product of any two adjacent sides | ||
| − | + | Please note that the adjacent sides do not need to be of equal length. The special case where all four sides of a rectangle are equal is called a [[square]], which is also a [[rhombus]] and a [[kite]]. | |
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Revision as of 10:18, May 14, 2007
A rectangle is a polygon of four sides where every angle is a right angle (90°)[1].
As a result of this definition:
- Each pair of opposite sides is of equal length.
- Opposite sides are parallel
- Diagonals are equal
- Adjacent sides are perpendicular
- Area = product of any two adjacent sides
Please note that the adjacent sides do not need to be of equal length. The special case where all four sides of a rectangle are equal is called a square, which is also a rhombus and a kite.
Notes
- ↑ There are many definitions of rectangle, but it seems sensible to use one which is based on angle properties rather than length or parallelism properties. Definition adapted from http://www.mathsisfun.com/definitions/rectangle.html