Question 31
Angles and PolygonsIn the figure above, PQ is parallel to ST and QR̂S = 40°. Find the value of x
- A.55
- B.60
- C.65
- D.75
Show the answer and explanation
Answer: A (55)
Explanation
Following the turns of the path P–Q–R–S–T between the parallel lines gives 3x + x − 40° = 180°. So 4x = 220° and x = 55°.