BBC: Module 6 (M6) - Geometry and measures - Angles in polygons
BBC: Module 5 (M5) – Geometry and measures - Angles in polygons
Some polygons of different kinds: open (excluding its boundary), boundary only (excluding interior), closed (including both boundary and interior), and self-intersecting. 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 ...
Polygons Polygons are defined as two-dimensional closed shapes that are formed by joining three or more line segments with each other. We tend to encounter polygons mostly while we learn about geometry. In this lesson, let us learn about polygons definition, regular polygons, polygon sides, and the properties of polygons, along with polygon examples and their identification.
polygon, in geometry, any closed curve consisting of a set of line segments (sides) connected such that no two segments cross. The simplest polygons are triangles (three sides), quadrilaterals (four sides), and pentagons (five sides). If none of the sides, when extended, intersects the polygon, it is a convex polygon. Otherwise, it is concave.
Geometry is, along with arithmetic, one of the oldest branches of mathematics. A mathematician who works in the field of geometry is called a geometer.
Interactive, free online geometry tool from GeoGebra: create triangles, circles, angles, transformations and much more!
Geometry is all about shapes and their properties. If you like playing with objects, or like drawing, then geometry is for you!