Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ncar!tank!iitmax!grace From: grace@iitmax.IIT.EDU (Thom Grace) Newsgroups: comp.graphics Subject: RE: Need an algorithm to calculate area of polygons Keywords: Green's Theorem Message-ID: <2865@iitmax.IIT.EDU> Date: 20 Oct 89 06:46:49 GMT Reply-To: grace@iitmax.iit.edu (Thom Grace) Distribution: usa Organization: Illinois Institute of Technology Lines: 21 In article <8115@microsoft.UUCP> David Levine cites Green's Theorem which he contends "you can find in many mathematics books". Well, my suboptimal contribution to this discussion is to provide the references I have here at hand to Green's Theorem: Spivak, "Calculus On Manifolds", W.A. Benjamin, Inc., NY, 1965, ISBN 0-8053-9021-9, p. 134. Churchill, Brown, and Verhey, "Complex Variables and Applications", Mc-Graw Hill, NY, 1974, ISBN 0-07-010855-2, p. 115. Now I have a question for D. Levine: I know about Green's Theorem, and I know about Newell's Formula, yet I have never (formally) tried to connect the two. So --- how do you do it??? ============================================================================== Thom Grace grace@iitvax 10 W. 31 St. (312) 567-3918 IIT Center Chicago, IL 60616 ==============================================================================