perplexus.info :: Geometry : Measure that angle III

Measure that angle III (Posted on 2004-09-07)

Triangle ABC has side AB=AC, and angle BAC = 20 degrees.

D is a point on side AC with AD=BC. Find angle DBC.

Solve this without trigonometry.

See The Solution Submitted by Brian Smith

Rating: 3.2000 (5 votes)

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re: Solution by cheating

| Comment 12 of 25 |

(In reply to Solution by cheating by nikki)

Your approach is valid, but this problem can be solved without invoking the other Measure that angle problems.

Posted by Brian Smith on 2004-09-08 15:28:57

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