Regular Polygons 476pages on this wiki Add New Page Edit Classic editor History Talk0 Share Regular polygons are shapes that have equal length side, and are equiangular. Internal AnglesEdit The equation for the sum of all the internal angles is: , where n is the number of sides. For the value of each separate angle: External AnglesEdit Each external angle has a value of: Ad blocker interference detected! Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected. Categories: Maths Geometry Add category Cancel Save