Octadecagon - Wikipedia
网页In geometry, an octadecagon (or octakaidecagon[1]) or 18-gon is an eighteen-sided polygon. [2] Regular octadecagon. Octadecagon with all 135 diagonals. A regular octadecagon has a Schläfli symbol {18} and can be constructed as a quasiregular truncated enneagon, t {9}, which alternates two types of edges. Construction.
Octadecagon -- from Wolfram MathWorld
网页2024年8月22日 · Octadecagon. An 18-sided polygon, sometimes also called an octakaidecagon.
List of polygons - Wikipedia
网页In geometry, a polygon is traditionally a plane figure that is bounded by a finite chain of straight line segments closing in a loop to form a closed chain. These segments are called its edges or sides, and the points where two of the edges meet are the polygon's vertices (singular: vertex) or corners. The word polygon comes from Late Latin ...
Polygon - Wikipedia
网页In geometry, a polygon (/ ˈpɒlɪɡɒn /) 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-gon.
Octadecagon | Math Wiki | Fandom
网页An Octadecagon is an 18-sided polygon with 18 angles. The regular octadecagon is the Petrie polygon for a number of higher-dimensional polytopes, shown in these skew orthogonal projections from Coxeter planes:
What is an 18 sided polygon called? - Socratic
网页2015年12月29日 · Answer link. An 18 sided polygon is called Octadecagon, Octakaidecagon.
Octadecagon - A polygon with 18 sides - Integers.info
网页An octadecagon is a polygon with 18 sides, and the sum of its interior angles is 2880 degrees.
Polygon 2018 年度最佳游戏榜单 - GameRes游资网
网页2018年9月6日 · Polygon 2018 年度最佳游戏榜单. Polygon 决定做一份年度大榜单，实时更新，绝对客观。. 不用等到年底却忘了年初都玩过什么游戏，这就帮你唤醒记忆，温故而知新。. 本榜单主要盘点了 PS4、Xbox One、任天堂 Switch 、PC 以及移动游戏平台上的诸多佳作，不光是《死亡 ...
How many of the triangles in a regular polygon of 18 sides are ...
网页2018年4月23日 · There are 18 18 ways to choose the apex of the triangle. If the apex is at vertex 0 0 the two other vertices can be at one of the pairs ±1 ± 1, … …, ±5 ± 5, ±7 ± 7, ±8 ± 8. As a consequence there are 18 ⋅ 7 = 126 18 ⋅ 7 = 126 possibilities in all. Share.
What is an 18-sided polygon? | Homework.Study.com
网页The official name for a polygon with 18 sides is an octadecagon. However, there are several names that might be used. Polygons with small amounts of... See full answer below.
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