MathDB
France TST 2000 D2Q2

Source:

March 2, 2013
geometry unsolvedgeometry

Problem Statement

A,B,C,DA,B,C,D are points on a circle in that order. Prove that ∣AB−CD∣+∣AD−BC∣≥2∣AC−BD∣|AB-CD|+|AD-BC| \ge 2|AC-BD|.
Back to ProblemsView on AoPS