Answer:
x = 54°
Step-by-step explanation:
The sum of the interior angles of a polygon is
sum = 180° (n - 2) ← n is the number of sides
The pentagon here has 5 sides, thus
sum = 180° × 3 = 540°
Each interior angle = 540° ÷ 5 = 108°
x is one half of the interior angle, thus
x = 0.5 × 108° = 54°
