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wu :: forums    riddles    putnam exam (pure math) (Moderators: towr, SMQ, Icarus, Eigenray, william wu, Grimbal)    Convex Pentagon « Previous topic | Next topic » Pages: 1  Reply Notify of replies Send Topic Print    Author  Topic: Convex Pentagon  (Read 480 times) Deedlit Senior Riddler     Posts: 476 Convex Pentagon   « on: Sep 6th, 2006, 4:04pm » Quote Modify Given nine points in the plane, no three of which are collinear.  Show that you can pick five points that form a convex pentagon. IP Logged Pages: 1  Reply Notify of replies Send Topic Print Forum Jump: ----------------------------- riddles -----------------------------  - easy   - medium   - hard   - what am i   - what happened   - microsoft   - cs => putnam exam (pure math)   - suggestions, help, and FAQ   - general problem-solving / chatting / whatever ----------------------------- general -----------------------------  - guestbook   - truth   - complex analysis   - wanted   - psychology   - chinese « Previous topic | Next topic »

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