What is the sum of the measures, in degrees, of the interior angles of an 18- sided polygon?
A. 2880
B. 3600
C. 3240
D. 3060

Option (D)

Step-by-step explanation:

Sum of interior angles of a polygon is represented by the expression,

Sum of interior angles = n(n - 1)×180°

Here n is the number of sides of a polygon

If n = 18,

Sum of 18 sided polygon = (18 - 1) × 180°

                                         = 7 × 180°

                                         = 3060°

Therefore, sum of interior angles of a 18 sided polygon will be 3060°.

Option (D) will be the answer.

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step-by-step explanation:

step-by-step explanation:

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