Question

The measure of each interior angle of a regular polygon is 120° How many sides does this polygon have?

• A. 8
• B. 5
• C. 6
• D. 7

Answer 1

Answer:

C. 6

interior angle$=\frac{(n-2)\times180}{n}$

$120=\frac{(n-2)\times180}{n}$

$120n=180n-360$

$60n=360$

$n=360/60=6$

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