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Usenet Newsgroups : rec.puzzles Hall of Fame


The rec.puzzles Hall of Fame is a compilation of over 500 of the most popular puzzles that have been posted and discussed in the rec.puzzles newsgroup. In most cases a detailed solution has been provided.

Many of these puzzles also appear in Braingle's own collection.

   
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Categories : geometry : triangle.20.degrees.p

In isoceles triangle ABC angle A=20, B=80, C=80.
Draw a line from C to side AB.
Call this line CD and angle BCD=70.
Draw a line from B to side AC.
Call this line BE and angle CBE=60.
Now draw line DE.
What is angle CDE?



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