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www.mathsisfun.com/geometry/polygons.html

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) ...

www.mathsisfun.com/shape.html

2D Shapes. Regular Polygons. A polygon is a plane (2D) shape with straight sides. To be a regular polygon all the sides and angles must be the same: ...

study.com/academy/lesson/what-is-a-polygon-definition-shapes-angles.html

Oct 7, 2020 ... A polygon is any 2-dimensional shape formed with straight lines. Triangles, quadrilaterals, pentagons, and hexagons are all examples of ...

www.theschoolrun.com/what-is-a-polygon

A polygon is a flat, two-dimensional (2D) shape with straight sides that is fully closed (all the sides are joined up). The sides must be straight. Polygons may have ...

www.skillsyouneed.com/num/polygons.html

This page examines the properties of two-dimensional or 'plane' polygons. A polygon is any shape made up of straight lines that can be drawn on a flat surface, ...

en.wikipedia.org/wiki/Polygon

In geometry, a polygon is a plane figure that is described by a finite number of straight line ... For triangles (n = 3), the centroids of the vertices and of the solid shape are...

tutors.com/math-tutors/geometry-help/types-of-polygons

The word "polygon" means "many-angled," from Greek. To be a polygon, a flat, closed shape must use only line segments to create its sides. So a circle or any&n...

www.splashlearn.com/math-vocabulary/geometry/polygon

Let's learn! What is a polygon? In geometry, a polygon can be defined as a flat or plane, two-dimensional closed shape with straight sides. It does not have curved  ...

www.khanacademy.org/math/geometry-home/geometry-shapes/angles-with-polygons/v/sum-of-interior-angles-of-a-polygon

Learn how to find the sum of the interior angles of any polygon. ... Geometric solids (3D shapes) ... Here "n" represents the number of sides of the polygon .

www.cuemath.com/geometry/polygon-shape

What Is A Polygon? In geometry, a polygon is a closed two-dimensional figure with three or more straight lines. The Greek word 'Polygon' consists ...