Question
Find $x$ in the following case:
✓
Answer
In the figure,
$\because$ Lines are parallel
$ \therefore 2 x+x=180^{\circ} $..........(co-interior angles)
$ \begin{aligned} & \Rightarrow 3 x=180^{\circ} \\ & \Rightarrow x=\frac{180^{\circ}}{3}=60^{\circ} \end{aligned} $
$\because$ Lines are parallel
$ \therefore 2 x+x=180^{\circ} $..........(co-interior angles)
$ \begin{aligned} & \Rightarrow 3 x=180^{\circ} \\ & \Rightarrow x=\frac{180^{\circ}}{3}=60^{\circ} \end{aligned} $
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