Example image of eyePlorer eyePlorer map for 'Regular polygon': Equiangular polygon Equilateral polygon Convex and concave polygons Star polygon Circumscribed circle Concyclic points Rotational symmetry Incircle and excircles of a triangle Compass and straightedge constructions Fermat number Parity (mathematics) Prime number Dihedral group Dihedral group of order 6 Symmetry group Reflection symmetry Simple polygon Similarity (geometry) Schläfli symbol Abstract polytope Euclidean geometry Henagon Digon Enneadecagon Heptadecagon Hexadecagon Nonagon Octadecagon Pentadecagon Quadrilateral Square (geometry) Tetradecagon Triskaidecagon Uniform polyhedron Supplementary angles Turn (geometry) Diagonal Apothem Semiperimeter Perimeter Pentagon Pentagram Coprime Hendecagram Hexagram Stellation Isometry Quasiregular polyhedron Regular polyhedron Johnson solid