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Mathematics 11 Online
OpenStudy (anonymous):

how many sides does a regular polygon have if each exterior angle measures 20????(:

Directrix (directrix):

The sum of the exterior angles is 360. If each angle has measure 20, then 360 divided by 20 will give the number of sides of the regular polygon.

Directrix (directrix):

What is 360/20 ? @Jonjonjonjonjohn

OpenStudy (anonymous):

18?

Directrix (directrix):

Correct.

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