Geometry Course/Polygon/Quadrilateral/Square

Square
A square is a polygon of four right angles and four parallel and congruent sides.
 * [[Image:sqr_Geometry.png|Square]]
 * AB = BC = CD = DA
 * $$\angle A = \angle B = \angle C = \angle C = 90^o$$

Perimeter

 * P = Side + Side + Side + Side = 4 x Side

Area

 * A = Side x Side = Side2