Ninu jiometri, a alopomeji tabi onilopomeji je elegbemerin deede . O tumosi pe o ni egbe merin didogba ati igun merin didogba (90-iyi igun, tabi igun gboro)[1]. A square with vertices ABCD would be denoted ABCD

Square (geometry).svg
A square is a regular quadrilateral.
Edges and vertices 4
Schläfli symbol {4}
Coxeter–Dynkin diagrams Àdàkọ:CDD
Symmetry group Dihedral (D4)
Area t2 (with t = edge length)
Internal angle (degrees) 90°
Properties convex, cyclic, equilateral, isogonal, isotoxal