Answer:
x = 108
Step-by-step explanation:
The sum of the interior angles in a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here the number of sides = 5, thus
sum = 180° × 3 = 540°
Sum the given angles and equate to 540.
Note that 2 of the angles have a measure of x
x + 85 + 95 + 144 + x = 540, that is
2x + 324 = 540 ( subtract 324 from both sides )
2x = 216 ( divide both sides by 2 )
x = 108
