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| One excircle to another (Posted on 2021-03-12) |
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It turned out for some triangle with sides a, b and c, that a circle of radius r = (a+b+c)/2 touches side c and extensions of sides a and b. Prove that a circle of radius (a-b+c)/2 is tangent to a and the extensions of b and c.
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 | Solution | Jer | 2021-03-13 08:09:00 |
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