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equilaterals on laterals of trapezoid (II Soros Olympiad 1997-98 R3 10.5)

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June 6, 2024
geometrytrapezoid

Problem Statement

Each of the lateral sides of the trapezoid, whose bases are equal to a a and bb, serves as a side of a regular triangle. One triangle is located entirely outside the trapezoid, and the other has common points with it. Find the distance between the centers of these triangles.