In Euclidean geometry, a square is a regular quadrilateral, which means that it has four equal sides and four equal angles (90-degree angles, π/2 radian angles, or right angles). It can also be defined as a rectangle in which two adjacent sides have equal length. A square with vertices ABCD would be denoted ABCD.
|Edges and vertices||4|
|Symmetry group||Dihedral (D4), order 2×4|
|Internal angle (degrees)||90°|
|Properties||Convex, cyclic, equilateral, isogonal, isotoxal|