Answer: The sum of the measures of the interior angles of a polygon is always 180(n-2) degrees, where n represents the number of sides of the polygon. The sum of the measures of the exterior angles of a polygon is always 360
I believe the 3rd answer down if the information you provided is correct
Squaring the sum on the top, rules out 1 and 2 (not squaring the 7 only)
then 4 times the difference. so I believe 4 (x-1) on the bottom.
The first one is 2x^2+2x-2
the second one is 2x^2-2x-2
the third one is 6h+6k
3x4x1/2= 6inches Multiply the base by the height and after multiply by one half
