Question

Question 109

In the given figure state which pair of lines are parallel. Give reason.

Answer 1

Now, $x={120}^{\circ }\left[verticallyoppositeangles\right]$.
$x+{60}^{\circ }={120}^{\circ }+{60}^{\circ }={180}^{\circ }$
Hence the sum of consecutive interior angles is ${180}^{\circ }$. Hence m and n will be parallel.