A polygon is a closed, two dimensional figure composed of line segments. Squares, hexagons, rectangles and concave octagons are all polygons.

en.wikipedia.org/wiki/Polygon

In elementary geometry, a polygon /ˈpɒlɪɡɒn/ is a plane figure that is bounded
by a finite ..... by flat polygonal faces, analogous to a polygon in two dimensions.
The corre...

www.mathsisfun.com/geometry/polygons.html

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" ...

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

May 16, 2015 ... Polygons are everywhere! In this lesson, you will learn what they are and what
they look like. You will also learn about a special class of...

www.skillsyouneed.com/num/polygons.html

Learn about the essential properties of plane shapes, polygons. Our easy to
follow guide will help you understand basic geometry.

mathstat.slu.edu/escher/index.php/Squares,_Rectangles,_Parallelograms_and_Other_Polygons

Feb 19, 2009 ... 1 Triangles; 2 4-sided polygons (Quadrilaterals). 2.1 Squares; 2.2 ... Triangles
are just shapes with 3 (straight) sides. They can be big or small ...

www.ask.com/youtube?q=Polygon Shapes&v=69lfTURDles

Jul 10, 2012 ... Download the Shape Videos: http://havefunteaching.com/videos/shape-videos/
Download the Shape Songs: ...

www.math-play.com/polygon-or-not/polygon-or-not.html

A polygon is a closed figure, formed by segments, and its sides do not cross.
Examples:mples. The following figures are polygons. triangle trapezoid rhombus
...

www.kidsmathgamesonline.com/facts/geometry/2dpolygonshapes.html

Enjoy learning about 2D polygon shapes with our range of interesting facts. Find
information about triangles, squares, pentagons, hexagons, heptagons, ...