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Topic: An Old Geometry Problem
Replies: 3   Last Post: Nov 13, 2010 9:28 AM

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Sujeet Kumar

Posts: 190
From: Patna
Registered: 10/21/10
An Old Geometry Problem
Posted: Nov 7, 2010 9:37 AM
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Recently I came across a paper by Tom Rike namely
"An Intriguing Geometry Problen".Here he has mentioned
following problem which was asked in Pythagoras Olympiad
in the Netherlands in 1980.Retry to discover its beauty-

In triangle ABC, point D is such that
angle DCA=angle DCB=angle DBC=10 degree and angle DBA=20 degree.Find the measure of angle CAD.



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