Verified answer

• Problem:

If the sum of measure of the interior angles of a convex polygon measures 1980°. How will you classify the polygon according to the number of sides?

• Explanation:

The only given is the measure of the sum of polygon's interior angles. We need to find the number of sides it has.

We'll use the formula in finding the sum of the interior angles and solve for the unknown value. Remember that S stands for the sum while n is for the number of sides a polygon has.

Therefore, the polygon that has 1980° as the measure of the sum of it's interior angles have 13 sides.

• Answer:

A. Undecagon - 11 sides

B. Octagon - 8 sides

C. Dodecagon - 12 sides

D. Decagon - 10 sides

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The answer is not in the given choices. The answer is tridecagon or triskaidecagon or 13-gon which is a thirtheen-sided polygon.

Answer:

a. undecagon

Step-by-step explanation:

1980 degree divided by 180 degree = 11 sides

the 11 sided polygon is what they called on decagon