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Geometry Problem 17 with Solution: Right triangles, Altitude, Double Angle, Auxiliary Lines.


The figure shows right triangles ABC and ADC, angle ACB = 2.angle ACD, and DE perpendicular to AC. Prove that AB = 2DE.


Right triangles and angles


See solution below

Art of Geometry Problem 17 using Mobile Apps. Light Patterns.

Art of problem 14 using mobile apps, Mobile Apps, iPad, iPhone

Art of Geometry Problem 17 in Motion. Light patterns

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Last updated: Sep 19, 2014

Geometry Problem 17 Solution(s)