Question

1. which of the following can be used to find the interior angle sum for an 11 - sided polygon? a. 11×180 b. (11 - 2)×180 c. 180 - 11×2 d. (11 - 2)/180

Explanation:

Step1: Recall the formula for the sum of interior angles of a polygon

The formula for the sum of the interior angles of a polygon with \( n \) sides is \( (n - 2)\times180^{\circ} \), where \( n \) is the number of sides of the polygon.

Step2: Apply the formula to an 11 - sided polygon

For an 11 - sided polygon, \( n = 11 \). Substituting \( n = 11 \) into the formula \( (n - 2)\times180^{\circ} \), we get \( (11 - 2)\times180 \).

Answer:

B. \((11 - 2)\times180\)