MathDB

16

Part of 2006 Sharygin Geometry Olympiad

Problems(1)

equilateral triangles on sides of a triangle create a big equilateral

Source: Sharygin 2006 IX-XI CR 16

8/24/2019
Regular triangles are built on the sides of the triangle ABCABC. It turned out that their vertices form a regular triangle. Is the original triangle regular also?
geometryEquilateralEquilateral Triangle