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1991 AMC 12 Question 12

AMC12 · 1991 AMC 12

Question 12

The measures (in degrees) of the interior angles of a convex hexagon form an arithmetic sequence of positive integers. Let $m^\circ$ be the measure of the largest interior angle of the hexagon. The largest possible value of $m^\circ$ is
  1. $165^\circ$
  2. $167^\circ$
  3. $170^\circ$
  4. $175^\circ$
  5. $179^\circ$