What is sum of the angles of a polygon?

Answer 1

Homework help has a great explanation of the answer to this question (see reference for the link).

We use a formula to find the sum of the interior angles of any polygon. In this formula, the letter n stands for the number of sides, or angles, that the polygon has.

sum of angles = (n - 2)180°

So for a triangle (n = 3), The angles add to 180
For a square (n = 4), the angles add to 360
For a octagon (n = 8) the angles add to 1080

Answer 2

It depends on the polygon. The sum of the interior angles of a triangle is 180o. For every additional side, there are 180o more. The sum of the interior angles of a polygon can be found using this equation:

Sa=180(sn-2)

Where Sa=the sum of the interior angles, and

sn=the number of sides that the polygon has.

Sn has to be a whole number greater than 2.

Answer 3

It's the number of sides minus two, then times 180.