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UKMT Senior Mathematical Challenge, 2016

Geometry Difficulty 1.0 Junior Find the answer United Kingdom

Alex draws a scalene triangle. One of the angles is $80°$ . Which of the following could be the difference between the other two angles in Alex's triangle?

(A) $0°$ (B) $60°$ (C) $80°$ (D) $100°$ (E) $120°$

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