Difference between revisions of "2007 AMC 12A Problems/Problem 6"
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Revision as of 10:51, 9 September 2007
Problem
Triangles ABC and ADC are isosceles with AB=BC and AD=DC. Point D is inside triangle ABC, angle ABC measures 40 degrees, and angle ADC measures 140 degrees. What is the degree measure of angle BAD?
Solution
I leave it to you to draw your own diagram.
- We angle chase, and find out that:
- DAC=20
- BAC=70
- BAD=50
