Square (geometry)

In plane geometry, a square is a polygon with four equal sides and equal angles. Those angles are then necessarily right angles. Squares are regular quadrilaterals, rectangles, rhombi, kites, parallelograms, and isosceles trapezoids/isosceles trapezia.

Related Topics:
Plane geometry - Polygon - Right angle - Regular quadrilateral - Rectangle - Rhombi - Kite - Parallelogram - Isosceles trapezoids/isosceles trapezia

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The diagonals of a square are equal and

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conversely, if the diagonals of a rhombus are proven

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to be equal, then that rhombus must be a square.

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The coordinates for the vertices of a square centered at the origin and with side length 2 are (±1, ±1), while the interior of the same consists of all points (x0, x1) with -1 < xi < 1.

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