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Below a circle is pictured with 12 equal arcs. Question: do chords AD, BE and CF intersect in one point? ![]() In this article we try to find a simple rule to answer this question. CEVA A good start is the CEVA sine rule:![]() The proof is found [HERE] . See picture below: ![]() Application 1 ![]() Application 2 ![]() ![]() |
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