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Lines, Angles, and Triangles

SAT Math· difficulty 4/5

The sum of the interior angles of a regular polygon is 1800°1800°. What is the measure of each interior angle?

  • A

    140°140°

  • B

    156°156°

  • C

    150°150°

    check_circle
  • D

    144°144°

Explanation

180(n−2)=1800⇒n=12180(n-2)=1800\Rightarrow n=12. Each interior angle =180012=150°=\frac{1800}{12}=150°.

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