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In geometry, an octagon (from Ancient Greek ὀκτάγωνον (oktágōnon) 'eight angles') is an eight-sided polygon or 8-gon. A regular octagon has Schläfli symbol {8} [1] and can also be constructed as a quasiregular truncated square, t{4}, which alternates two types of edges. A truncated octagon, t{8} is a hexadecagon, {16}.
A pentagon is a five-sided polygon. A regular pentagon has 5 equal edges and 5 equal angles. ... Polygon names Ones Tens Twenties Thirties+ Hundreds 10: deca-20 ...
Megagon - 1,000,000 sides; Star polygon – there are multiple types of stars Pentagram - star polygon with 5 sides; Hexagram – star polygon with 6 sides Star of David (example) Heptagram – star polygon with 7 sides; Octagram – star polygon with 8 sides Star of Lakshmi (example) Enneagram - star polygon with 9 sides; Decagram - star ...
Deeper truncations of the square can produce isogonal (vertex-transitive) intermediate star polygon forms with equal spaced vertices and two edge lengths. A truncated square is an octagon, t{4}={8}. A quasitruncated square, inverted as {4/3}, is an octagram, t{4/3}={8/3}.
A polytope is a geometric object with flat sides, which exists in any general number of dimensions. ... The following list of polygons, ... E 6 / E 7 / E 8 / F 4 / G ...
There are generic geometric names for the most common polyhedra. The 5 Platonic solids are called a tetrahedron , hexahedron , octahedron , dodecahedron and icosahedron with 4, 6, 8, 12, and 20 sides respectively.
The smallest golygon has 8 sides. It is the only solution with fewer than 16 sides. It contains two concave corners, and fits on an 8×10 grid. It is also a spirolateral, 8 90° 1,5. A golygon, or more generally a serial isogon of 90°, is any polygon with all right angles (a rectilinear polygon) whose sides are consecutive integer lengths.
Plan of the Dome of the Rock, Jerusalem The Tower of the Winds in Athens Octagon buildings and structures are characterized by an octagonal plan form, whether a perfect geometric octagon or a regular eight-sided polygon with approximately equal sides.