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CTK Exchange
ionut onisor
guest
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Mar-15-08, 09:34 AM (EST) |
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"concurrency in triangle"
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let ABC be a triangle and BB' and CC' be altitudes of the triangle. draw the circle through B' and C' and tangent to circumcircle. let A" be the point of tangency and B" and C" similarly defined. prove that lines AA", BB" and CC" have a common point.
respectfully, ionut onisor
bucharest, romania
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