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)

Comments: ( Back to comment list | You must be logged in to post comments.)

re(2): Got it!

| Comment 24 of 25 |

(In reply to re: Got it! by nikki)

Thanks, nikki.

I also thought the trapezoid solution in Richard's post was very ingenious.

Posted by Ken Haley on 2004-09-15 00:26:26

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