Example image of eyePlorer eyePlorer map for 'Pentagon': Geometry Internal and external angle Chordal graph Golden ratio Pentagram Regular polygon Star polygon Schläfli symbol Apothem Inscribed figure Compass and straightedge constructions Constructible polygon Euclid Euclid's Elements Circle Overhand knot Associahedron Dodecahedron The Pentagon Centered pentagonal number Fort Cumberland (England) Jamie McIntyre Kremlin stars Lute of Pythagoras Nancy Youssef Pentagon tiling Pentagonal number Pentagonal prism Pentagonal pyramid Pentagonal pyramidal number Red star Truncated triakis tetrahedron U.S. Army and CIA interrogation manuals Domus Municipalis Fort Runyon Fort Warren (Massachusetts) Hexagonal truncated trapezohedron Irving Joshua Matrix Mathew Hoh Nested radical Observation Tower Burgstall Pentacon Pentagonal antiprism Pentagonal bifrustum Pyritohedron Quadrilateral Rhombicosidodecahedron Saunder (crater) Snub dodecahedron Square truncated trapezohedron