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Double Secant (
Posted on 2018-02-15
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Two concentric circles of radius R and r, with R>r are both intersected by the same secant line. The points of intersection, in order, are A,B,C,D.
Prove AC*CD is constant.
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Jer
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Subject
Author
Date
Solution
Bractals
2018-02-20 19:07:58
solution
xdog
2018-02-15 12:34:16
not a mathematical proof, but beyond a reasonable doubt
Charlie
2018-02-15 09:29:37
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