Geometry Problems, Online Education

 Problem 127. Triangle, Centroid, Incenter, Parallel, Proportions. Level: High School, SAT Prep, College

In the figure below, given a triangle ABC of sides AB = c, BC = a, and c > a. Let be I the incenter and G the centroid. If GI is parallel to AC, prove that: Conclusion, formula. View or post a solution.

Elearn 127: Centroid, Incenter, Parallel


Geometric Art using iPad Apps

Elearn 127: Centroid, Incenter using iPad Apps

See also: Problem 126Augmented reality.

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