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In geometry, a nonagon (/ ˈ n ɒ n ə ɡ ɒ n /) or enneagon (/ ˈ ɛ n i ə ɡ ɒ n /) is a nine-sided polygon or 9-gon. The name nonagon is a prefix hybrid formation, from Latin (nonus, "ninth" + gonon), used equivalently, attested already in the 16th century in French nonogone and in English from the 17th century.
In geometry, an enneagram (🟙 U+1F7D9) is a nine-pointed plane figure. It is sometimes called a nonagram, nonangle, or enneagon. [1] The word 'enneagram' combines the numeral prefix ennea-with the Greek suffix -gram. The gram suffix derives from γραμμῆ (grammē) meaning a line. [2]
A pentagon is a five-sided polygon. A regular pentagon has 5 equal edges and 5 equal angles. ... The triangle, quadrilateral and nonagon are exceptions, although the ...
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 polygon with 10 sides
In spherical geometry, a monogon can be constructed as a vertex on a great circle . This forms a dihedron , {1,2}, with two hemispherical monogonal faces which share one 360° edge and one vertex. Its dual, a hosohedron , {2,1} has two antipodal vertices at the poles, one 360° lune face, and one edge ( meridian ) between the two vertices.
A shape is a graphical representation of an object's form or its external boundary, outline, or external surface. ... Octagon, Nonagon, Decagon... See polygon ...
A non-convex regular polygon is a regular star polygon. The most common example is the pentagram, which has the same vertices as a pentagon, but connects alternating vertices. For an n-sided star polygon, the Schläfli symbol is modified to indicate the density or "starriness" m of the polygon, as {n/m}.
In geometry, a polygon (/ ˈ p ɒ l ɪ ɡ ɒ n /) is a plane figure made up of line segments connected to form a closed polygonal chain. The segments of a closed polygonal chain are called its edges or sides. The points where two edges meet are the polygon's vertices or corners. An n-gon is a polygon with n sides; for example, a triangle is a 3 ...