Question

The sum of the measures of the interior angles in a convex polygon is 1.260. How many sides does the polygon have?

A 5
B7
c9
OD. 14

Answer 1

c. 9.

Explanation:

Sum of interior angles = 180(n - 2), so

180(n - 2) = 1260

180n - 360 = 1260

180n =1260 + 360 = 1620

n = 1620/ 180

= 9 sides.