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.[1]

A regular quadrilateral
TypeRegular polygon
Edges and vertices4
Schläfli symbol{4}
Coxeter–Dynkin diagrams
Symmetry groupDihedral (D4), order 2×4
Internal angle (degrees)90°
PropertiesConvex, cyclic, equilateral, isogonal, isotoxal

Share this article:

This article uses material from the Wikipedia article Square, and is written by contributors. Text is available under a CC BY-SA 4.0 International License; additional terms may apply. Images, videos and audio are available under their respective licenses.