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IMO 1959–1966 - Longlisted Problems (individual years unknown) Question 33

IMO Shortlist · IMO 1959–1966 - Longlisted Problems (individual years unknown)

Question 33

(BUL) Two circles touch each other from inside, and an equilateral triangle is inscribed in the larger circle. From the vertices of the triangle one draws segments tangent to the smaller circle. Prove that the length of one of these segments equals the sum of the lengths of the other two.