State whether each pair of dotted lines in the following diagram are parallel or not parallel. Give reasons .If you know please answer immediately needed .
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Step-by-step explanation:
In no. ( 1 ) sum of 75° and 105° and s 180° ( co linear equation ). So this is parallel.
In no. ( 2 ) value 70° is same by ( alternate exterior angle ). So this is parallel.
In no. ( 3 ) By doing crossponding of 55° and then doing linear pair it's 185°. So this is not parallel.
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