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IMAS 2019 — Upper Primary Grades 5–6 — Round 2 Question 4

IMAS · IMAS 2019 — Upper Primary Grades 5–6 — Round 2

Question 4

The degree measure of each interior angle of a triangle is a positive integer and their greatest common factor is 15. Which of the following do not match the degrees of the interior angles of this triangle?
  1. 30, 45, 90
  2. 45, 60, 75
  3. 15, 90, 75
  4. 30, 75, 75
  5. 15, 60, 105