Difference between revisions of "2012 AMC 10B Problems/Problem 12"
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Revision as of 19:34, 25 February 2012
Problem
Point B is due east of point A. Point C is due north of point B. The distance between points A and C is , and . Point D is 20 meters due north of point C. The distance AD is between which two integers?
Solution
If point B is due east of point A and point C is due north of point B, is a right angle. And if , is a 45-45-90 triangle.