Rectangle
From The Art and Popular Culture Encyclopedia
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In Euclidean plane geometry, a rectangle is a quadrilateral with four right angles. It can also be defined as: an equiangular quadrilateral, since equiangular means that all of its angles are equal (360°/4 = 90°); or a parallelogram containing a right angle. A rectangle with four sides of equal length is a square.
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See also
- Cuboid
- Golden rectangle
- Hyperrectangle
- Superellipse (includes a rectangle with rounded corners)
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