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Find the value of $x$ in each of the following figures if $l||m$.
"
To do:
We have to find the value of $x$ in each of the given figures if $l \| m$.
Solution:
(i) Let the angle opposite to $110^{\circ}$ be $y$.
Therefore,
$y=110^{\circ}$ [Vertically opposite angles]
$\angle x+\angle y=180^{\circ}$ [Sum of the interior angles on the same side of the transversal is $180^o$]
$\angle x+110^{\circ}=180^{\circ}$
Therefore,
$\angle x=180^{\circ}-110^{\circ}$
$=70^{\circ}$
Thus $x=70^{\circ}$
(ii) $\angle x=100^{\circ}$ [Pair of corresponding angles are equal]
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