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TIMO - 2018 - Grade 7 - Preliminary Round - Paper 2 Question 19

TIMO · TIMO - 2018 - Grade 7 - Preliminary Round - Paper 2

Question 19

A triangle has three interior angles with ratio 2 : 3 : 4. Find the size of the smallest exterior angle.
  1. $80^\circ$
  2. $140^\circ$
  3. $100^\circ$
  4. $40^\circ$