

Problem 857: Triangle, Median, Midpoint, Angles, 30, 45
Degrees, Congruence, Auxiliary Lines. Level: High School, SAT Prep, College geometry

The figure shows a triangle ABC with
angle BAC = 30 degrees, angle ACB = 105 degrees. If BD is a
median, find the measure of angle ABD. Try to use elementary geometry (no
trigonometry)..


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