Difference between revisions of "1961 IMO Problems/Problem 4"
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==Problem== | ==Problem== | ||
− | In the interior of triangle <math>ABC</math> a point ''P'' is given. Let <math>Q_1,Q_2,Q_3</math> be the | + | In the interior of [[triangle]] <math>ABC</math> a [[point]] ''P'' is given. Let <math>Q_1,Q_2,Q_3</math> be the [[intersection]]s of <math>PP_1, PP_2,PP_3</math> with the opposing [[edge]]s of triangle <math>ABC</math>. Prove that among the [[ratio]]s <math>\frac{PP_1}{PQ_1},\frac{PP_2}{PQ_2},\frac{PP_3}{PQ_3}</math> there exists one not larger than 2 and one not smaller than 2. |
==Solution== | ==Solution== | ||
{{solution}} | {{solution}} |
Revision as of 11:18, 6 July 2007
Problem
In the interior of triangle a point P is given. Let be the intersections of with the opposing edges of triangle . Prove that among the ratios there exists one not larger than 2 and one not smaller than 2.
Solution
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