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Online Math: Geometry Problem 1229: Three Tangent Circles, Common Tangent Line, 3-4-5 Right Triangle. Tiled background image: Intihuatana, Machu Picchu. Level: College, High School.

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In the figure below, circles O1, O2, and O3 are tangent to each other and to a line L at A, B, and E, respectively. The circle O4 passes through A and B and is tangent to circle O3 at F. O2B extended meets circle O4 at C. Prove that triangle ABC is a 3-4-5 right triangle.
 

Geometry Problem 1229: Three Tangent Circles, Common Tangent Line, 3-4-5 Right Triangle
 

Art of Geometry Problem 1229 using Mobile Apps. Light Patterns.

Art of problem 1229 using mobile apps, Mobile Apps, iPad, iPhone

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Last updated: Jul 4, 2016