Chuck
Update MathWorld links to HTTPS
14:19
+2
Houpt
no edit summary
15:58
-1
Created page with 'To calculate the area of a non-self-intersecting polygon: see Polygon Area at : :Weisstein, Eric W. "Polygon Area." From MathWorld--A Wolfram Web Resource. http://mathworld.wolf…'
15:57
+803