In the figure, if $l \parallel m, n \parallel p$ and $\angle 1 = 85^o$, find $\angle 2$.
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Given:
$l \parallel m, n \parallel p$ and $\angle 1 = 85^o$.
To do:
We have to find $\angle 2$.
Solution:
$n \parallel p$
This implies,
$\angle 1 = \angle 3$ (Corresponding anlges are equal)
$\angle 3 =\angle 1 = 85^o$
$m \parallel l$
Therefore,
$\angle 3 + \angle 2 = 180^o (Co interior angles are supplementary)
$85^o + \angle 2 = 180^o$
$\angle 2 = 180^o - 85^o$
$\angle 2 = 95^o$
Hence, $\angle 2 = 95^o$.
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