class : 7th
book : viva
topic : lines and Angels
please give all answers correctly and with neat reason
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Answer:
(a) Parallel
(b) Not parallel
(c) Parallel
(d) Not parallel
Step-by-step explanation:
In figure A, the given two angles are supplementary. Co-interior angles should be supplementary for it to be parallel.
In figure B, ∠1 ≠ angle marked 75° in the right, and so its not parallel.
In figure C, ∠2 = 123°, which makes it parallel.
In figure D, ∠3 ≠ 98°, which shows that its not parallel.
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