Polygons are 2D shapes that have straight sides. Regular polygons have sides and angles that are all the same size. Let's recap what a polygon is with this quick video. How would you work out the ...

Polygons can be regular or irregular in shape. A polygon is a closed 2D shape with at least three sides. A regular polygon is a polygon with all equal sides and angles. An irregular polygon is a ...

He accomplished this by approximating the circumference of a circle by the perimeters of regular polygons inscribed in and circumscribed around the circle. Pi is ubiquitous in modern science and ...