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The formula for number of sides a polygon has given the sum of its internal angles is 1800 * (n - 2). So, for a triangle, n=3, and sum of the angles is 1800.

So to answer your question, first divide 1,980 by 180 to get 11. Now add 2, and you get the number of sides, 13.

In case you're curious, a 13 sided polygon is called a triskaidecagon.

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Q: How many sides does a polygon have if the sum of its angle measures is 1980?
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If the sum of the interior angle measures of a polygon is 1980 degrees how many sides does a polygon have?

It will have (1980+360)/180 = 13 sides


If the sum of the interior angle measures of a polygon is 1980 degrees how many sides does the polygon have?

It will have (1980+360)/180 = 13 sides


What is the side of the polygon when the sum of the measures of the vertex angle is 1980 degrees?

If the interior angles of a polygon add up to 1980 degrees then it has 13 sides


How many sides does a polygon have if the sum of the measures of its angles is 1980 degrees?

13 sides


If the sum of the measures of the interior angles of a polygon is 1980 how many sides does the polygon have?

300


What is the sum of an interior angle measure of a 13-sides polygon?

1980 degrees


If the sum of the measures of the interior angles of a polygon is 1980 how many sides does it have?

The formula for the sum of the angles of an interior polygon is 180(n-2), where n is the number of sides, so then you solve 180(n-2) = 1980. (n-2) = 11 n = 13. So the polygon has 13 sides.


How many sides would a regular polygon have if one of its exterior angles measures 1980 degrees?

An exterior angle of a regular polygon must measure less than 180 degrees. So please check your facts, your typing and resubmit a sensible question.


What is the angle sum for a thirteen sided polygon?

The question has been asked "What is the angle sum of a thirteen sided polygon?" The answer to this question is 1980 degrees. The sum of the interior angles of a polygon of n sides = 180(n - 2)


If the sum of the measures of the interior angles of a polygon is 1980 degrees how many sides does it have?

The formula for the sum of the angles of an interior polygon is 180(n-2), where n is the number of sides, so then you solve 180(n-2) = 1980. (n-2) = 11 n = 13. So the polygon has 13 sides.


What is the sum of the interior angle measure of a 13 sides polygon?

The interior angles add up to 1980 degrees.


What is the sum of angle measures of a 13-sided polygon?

Sum of exterior angles = 360 degrees Sum of interior angles = 1980 degrees