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IMAS 2012 — Upper Primary Grades 5–6 — Round 1 Question 6

IMAS · IMAS 2012 — Upper Primary Grades 5–6 — Round 1

Question 6

The smallest interior angle of a triangle is $50^{\circ}$. Which of the following statements about this triangle is correct?
  1. It must be isosceles.
  2. It must be right angled.
  3. It must be acute angled.
  4. It must be obtuse angled.
  5. None of these is correct.