They increase as well.
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The addition of an extra side increases the total of the internal angles by 180° The sum of the internal angles of a polygon = (number of sides - 2) × 180°
All polygons have an equal number of sides and angles.
As the number of sides increases, the number of interior angles increases,and if the polygon is regular, the measure of each individual interior anglealso increases, always getting closer and closer to 180 degrees each.Eventually, if this keeps going to a ridiculous extreme, the figure keeps gettingcloser to the special polygon with an infinite number of sides and an infinitenumber of 180-degree interior angles, called a "circle".--------------------------------------------------------------------------------The formula for calculating the interior angle of one angle of a regular polygon is 180*(n-2)/n, where n is the number of sides. If you do a range of calculations for polygons with increasing numbers of sides, (you could stop at 1,000!) you will observe the truth of the explanatory statement given in the first paragraph above.
Polygons have an equal number of sides and angles.
Go to the link at MathOpenRef.com You can change the number of sides and see the angles.