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jmc

geometry senior

Problem

Triangle has and . Points and are located on and respectively so that , and is the angle bisector of angle . Let be the point of intersection of and , and let be the point on line for which is the midpoint of . If , find .
problem
Solution
Since is the midpoint of and , quadrilateral is a parallelogram, which implies and is similar to Thus, Now let's apply the angle bisector theorem. .
Final answer
072