Question
In Fig. state which pair of lines are parallel. Give reason.
✓
Answer
$x = 120^\circ [$Vertically opposite angles$]$
Now, $x + 60^\circ = 120^\circ + 60^\circ = 180^\circ $
Since, the sum of consecutive interior is $180^\circ .$
Hence, $m$ and $n$ will be parallal.
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