JAMB Mathematics 1995 Question 32

Question 32

Angles and Polygons

In the diagram above, k, m and n are parallel lines. What is the marked x?

Diagram for this question
  1. A.37°
  2. B.63°
  3. C.117°
  4. D.153°
Show the answer and explanation

Answer: B (63°)

Explanation

The 117° angle and x lie on opposite sides of the transversal with the parallel lines, so together they make a straight angle: x = 180° − 117° = 63°.