Answer:
x = 95
Step-by-step explanation:
You already know the sum of angles in a polygon is (n-2)180° where n is the number of sides so we can find out the sum of angles in this polygon and then find x.
Sum of angles in polygon = (5-2)180°
= 3×180°
= 540°
x + 104 + 117 + 100 + 124 = 540
x = 540 - 104 - 117 - 100 - 124
x = 95
