Answer:
54°
Step-by-step explanation:
The two strokes on each side of the triangle show that the triangle is an isosceles triangle and ∠KJL and ∠KLJ are equal. The sum of angles in a triangle is 180°.
∠KJL + ∠KLJ = 180° - 72°
= 108°
∠KJL = 108° ÷ 2
= 54°
