Geometry, Theorems and Problems

 Problem 242. Triangle with Equilateral triangles, Parallelogram

In the figure, equilateral triangles ABC', BCA', and ACB' are constructed on the sides of a triangle ABC. Prove that A'BC'B' is a parallelogram.
Post or view a solution. See also: Artwork of Problem 242

Elearn 242: Triangle with equilateral triangles 


Home | Geometry | Problems | 241-250 | Email | by Antonio Gutierrez

Post or view a solution