Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ ¹ ² ³ °
 

You are not logged in. #1 20060220 04:26:53
Irregular PolygonsHow do you calculate the the area and perimeter of an irregular polygon knowing the length of sides #2 20060220 04:54:58
Re: Irregular PolygonsThe perimeter would simply be the sum of the lengths of all sides. To get the area you either need to break down the irregular polygon into regular polygons and sum their areas or integrate the equations that describe the upper and lower bounderies of the shape in question. #3 20060220 07:31:13
Re: Irregular PolygonsIf you only need to solve one (or a few), then break into triangles as irspow suggested. But there are methods to do it automatically using a conmputer algorithm. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #4 20060220 07:51:23
Re: Irregular PolygonsFor any regular polygon; #5 20060220 09:15:03
Re: Irregular PolygonsI was given this formula #6 20060220 10:11:00
Re: Irregular PolygonsHave a look at my reply to this topic. I think your formula is based on that idea, just simplified a lot. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman 