Difference between revisions of "2007 AMC 12B Problems/Problem 3"
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Revision as of 13:18, 12 June 2007
The point O is the center of the circle circumscribed about triangle ABC, with <BOC = 120° and <AOB = 140°, as shown. What is the degree measure of <ABC?
A. 35 B. 40 C. 45 D. 50 E. 60
