- A60
- B27
- C33
- D30
Step-by-Step Solution
Co-interior partners: 180 - 40 = 140 and 180 - 70 = 110. Difference = 140 - 110 = 30°.
Answer: D) 30
Two different transversals cut a pair of parallel lines and meet on the upper line at point R. The two transversals make angles of 40° and 70° with the upper parallel line on the same side, opening toward the lower line.
Using co-interior angles, the two interior angles they make with the LOWER line on that same side are 140° and 110°. What is the difference between these two lower interior angles?
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