Changes

| name = Square| image = Square (geometry).svg| caption =Caption for squares| type edges = general type of this shape4| euler schläfli ={4}| edges coxeter ={{CDD|node_1|4|node}}| symmetry = [[Dihedral group|Dih₄]] [4], *44| rotsymmetry =[[Cyclic group|C₄]], [4]⁺, 44| area = some simple formula(e)t²| angle = an internal angle in case of regular polygon90°| dual properties = dual [[Convex polygon of this shape|convex]]| properties circumference = π r • 2 (where ''r'' = radius) or π d (where ''d'' =diameter)