Home Geometry Mind Map Problems All problems Visual Index Problems Art Gallery 511-520 Double Angle Solution / comment

Problem 511: Triangle, Double Angle, Angle Bisector, Measure.
Level: High School, College, SAT Prep.

The drawing shows a triangle ABC with the angle bisector BD. The angle A is double the angle C. Prove that AD=BC-AB.

Triangle, Double Angle, Angle Bisector


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