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wu :: forums    riddles    medium (Moderators: Icarus, ThudnBlunder, william wu, towr, SMQ, Grimbal, Eigenray)    Tangential Quadrilateral « Previous topic | Next topic » Pages: 1  Reply Notify of replies Send Topic Print    Author  Topic: Tangential Quadrilateral  (Read 908 times) O09 Newbie     Posts: 6 Tangential Quadrilateral   « on: Oct 18th, 2009, 9:56pm » Quote Modify Prove that in a tangential quadrilateral (one that has an incircle), the intersection of the diagonals is collinear with each pair of opposite points of tangency. 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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