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Topic: Grad school puzzle
Replies: 1   Last Post: Jan 31, 1995 9:19 PM

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"Douglas Darfus"

Posts: 2
Registered: 12/6/04
Grad school puzzle
Posted: Jan 31, 1995 10:41 AM
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We had the following puzzle in class tonight. We are to work on it until
next week. I'll describe the drawing instead of trying to draw it.

Draw an isosceles triangle ABC where angle B & C are the same (80 degrees).
Place a point somewhere on side AB and call it D. Place a point on side AC
and call it E. Connect segment BE, DE, and CD. We know this much....
angle EBC = 60 angle EBD = 20 angle DCE = 30 angle DCB = 50
The question is what does angle DEB = ?

The person who gave us this said we would never get it & when we saw the
solution we would say "Of course!" We want to prove him wrong. Thanx!






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