Question

I know its obvious, but my mind just went blank. Please help. @iGreen.

Answer 1

The sum of the measures of the interior angles of a polygon is 1620°.

How many sides does the polygon have?

____

Answer 2

Use the formula:

180 * (n - 2)

1620 = 180 * (n - 2)

Distribute 180 into the parenthesis:

1620 = 180n - 360

Add 360 to both sides:

1980 = 180n

Divide 180 to both sides.

Answer 3

1980 / 180 = ?

Answer 4

11

Answer 5

1980 / 180 = 11

Answer 6

Yes, that's our answer. @Master_Chief_117

To check we can plug it back in:

180 * (n - 2)

180 * (11 - 2)

180 * 9

1620

Answer 7

thanks :) I have one more. ill tag you.