Interior angles of n-sided polygon = (2n - 4) right angles.
In this case (2n - 4) = 2880/90 ie 32, so n = 18
Only when it is a regular polygon that all interior angles are of equal measure
a convex polygon has 6 sides . What is the sum of the measure of its interior angles?
Only if the polygon is "regular".
octagon
The interior angles add up to 12,240 degrees
The interior angles add up to 1800 degrees
The sum of the interior angles of a 12 sided polygon add up to 1800 degrees.
Only if the polygon is a "regular" one.
The interior angles of an octagon add up to 1080 degrees
For any polygon of N sides, the sum of the interior angles (in degrees) is 180*N-360, which for N=20 is 3240°
6
No. To elaborate, the smallest regular polygon, an equilateral triangle, has 60 degree interior angles. The next larger one, a square, has 90 degree interior angles. In fact, for any regular polygon, the interior angles measure 180*(n-2)/n degrees, where n is the number of sides. No polygon has less than 3 sides. Thus, no regular polygon can have interior angles less than 60 degrees.