Question

7 sides A) two thousand eight hundred eighty degrees
12 sides B) nine hundred degrees
14 sides C) one thousand eight hundred degrees
18 sides D) two thousand one hundred sixty degrees
match please very important

Answer 1

well the formula for angle sum of a polygon is

\[Sum = ( n - 2) \times 180\]

n = the number of sides....

as an example a 7 sided polygon

n = 7

\[Sum = (7 - 2) \times 180\]

or

\[Sum = 5 \times 180...... so...... Sum = 900\]

use the formula for the onther 2 polygons