Answer:
x = 60°
Explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
Here n = 6, thus
sum = 180° × 4 = 720°
Each interior angle = 720° ÷ 6 = 120°
interior angle + exterior angle = 180°, that is
120° + x = 180° ( subtract 120° from both sides )
x = 60°