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PrintJunior Mathematical Olympiad, September 2019
Netherlands 2019 geometry
Problem
Point lies on side of triangle . Angle in triangle is equal to angle in triangle , and angle in triangle is equal to angle in triangle . The given information is not enough to derive the exact shape of triangle . However, you can still derive that one of the given statements below is always false. Which statement is it? By we denote the length of line segment .
A) B) C) D) E)
A) B) C) D) E)
Solution
E)
Final answer
E
Techniques
Angle chasingDistance chasing