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A polygon is a plane shape with straight sides. Is it a Polygon? Polygons are 2-dimensional shapes. They are made of straight lines, and the shape is "closed" (all the lines connect up).
In geometry, a polygon can be defined as a flat or plane, two-dimensional closed shape bounded with straight sides. It does not have curved sides. The sides of a polygon are also called its edges. The points where two sides meet are the vertices (or corners) of a polygon. Here are a few examples of polygons.
Polygon Definition. A polygon is a flat, two-dimensional (2D) shape with straight sides which are all joined up. A shape with straight sides which are not fully closed is not a polygon. A polygon can have any number of sides.
The sum of exterior angles of a polygon is 360°. The formula for calculating the size of an exterior angle is: exterior angle of a polygon = 360 ÷ number of sides. Learn about and revise angles...
A polygon is a two dimensional shape enclosed by three or more straight lines. A short video showing how to prove the sum of the angles in a n-sided polygon is 180° × (n-2). For example a ...
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 ...
There are lots of different types of polygon. Find out about quadrilaterals, triangles, polygons and circles in this Second Level Maths guide from BBC Bitesize.
A polygon is a 2D shape with straight sides. To be a regular polygon all the sides and angles must be the same: Triangle - 3 Sides. Square - 4 Sides. Pentagon - 5 Sides. Hexagon - 6 sides. Heptagon - 7 Sides. Octagon - 8 Sides. Nonagon - 9 Sides.