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Lines, Angles, and Triangles

SAT Math· difficulty 4/5

A regular polygon has each interior angle measuring 162°162°. How many sides does it have?

  • A

    1515

  • B

    1818

  • C

    2020

    check_circle
  • D

    2424

Explanation

Exterior angle =180−162=18°=180-162=18°. n=36018=20n=\frac{360}{18}=20.

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