Question

I need help please!!

Answer 1

Explanation:

The sum of the interior angles of a convex polygon is equal to the product of 180° and the number of sides without two: s = 180(n - 2), where s is the sum of angles and n is the number of sides.

`s=180^0(7-2)\\\\s=180^0(5)\\\\s=900^0\\\\Thus,\ \\\\129^0+138^0+127^0+130^0+122^0+123^0+x=900^0\\\\x=900-(129^0+138^0+127^0+130^0+122^0+123^0)\\\\x=900^0-769\\\\x=131^0`

`Answer:\ angel\ x\ measures\ \boxed{131}\ ^0`