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

You are not logged in. #1 20050826 23:47:40
Strange formulaThere is a formula to find area of any polygon drawn on a graph. Last edited by ahgua (20050827 01:45:27) Life is a passing dream, but the death that follows is eternal... #2 20050827 03:28:15
Re: Strange formulaI think that can be done with vector product and matrix determinants #3 20050827 08:28:24
Re: Strange formulaI wrote a program to do this once. "The physicists defer only to mathematicians, and the mathematicians defer only to God ..."  Leon M. Lederman #4 20050828 20:09:19
Re: Strange formulai think it can be proven by dividing the polygon into many smaller polygons, eg triangles 