name | Area (m²) | edges | dual | Properties | Schlafli symbol | Symmetry group | vertices | Polyhedron face |
---|---|---|---|---|---|---|---|---|
Apeirogon | 8 | {8} | ||||||
Digon | 1 | {1} or h [Alternation_(geometry)]{2} | D1, [ ], (*•) | |||||
Equilateral triangle | 3 | Constructible | {3} | D3 [Dihedral_symmetry] | Equilateral triangle, Triangle | |||
Hendecagram | 11 | {11/2}, {11/3}$#${11/4}, {11/5} | Dih11 [Dihedral_symmetry], order 22 | Equilateral triangle, Triangle | ||||
Isosceles trapezoid | 4 | Kite | convex , cyclic | Dih2 [Dihedral_symmetry], [ ], (*), order 2 | Triangle | |||
Isosceles triangle | 3 | convex , cyclic | () ? {} | Dih2 [Dihedral_symmetry], [ ], (*), order 2 | Equilateral triangle, Triangle | |||
Kite | 4 | Isosceles trapezoid | D1 [Reflection_symmetry] (*) | Equilateral triangle, Triangle | ||||
Quadrilateral | 4 | {4} (for square) | Equilateral triangle, Triangle | |||||
Rectangle | 4 | Rhombus | convex , isogonal , cyclic Opposite angles and sides are congruent | {} × {} or {}2 | Dih2 [Dihedral_symmetry], [2], (*22), order 4 | Equilateral triangle, Triangle | ||
Rhombus | 4 | Rectangle | convex , isotoxal | {} + {} or 2{} | Dih2 [Dihedral_symmetry], [2], (*22), order 4 | Equilateral triangle |