The ABC angle is 60 degrees and the BCD angle is 120 degrees. Can lines AB and CD be parallel?
| May 9, 2021 | education
The angle ABE is adjacent to the angle ABC, the sum of which is 180, then the angle ABE = (180 – 60) = 120.
Angle ABE and angle BCD are the corresponding angles at the intersection of straight lines AB and CD of secant BC, and since angle ABE = BCD, straight lines AB and CD are parallel.
Answer: Straight lines AB and CD are parallel.
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