$\angle$ co-interior: $\angle 1 = 2x$, $\angle 2 = 4x$. For parallel lines, $x$ is

$\angle$ co-interior: $\angle 1 = 2x$, $\angle 2 = 4x$. For parallel lines, $x$ is
  1. $30$
  2. $45$
  3. $60$
  4. $15$

Solution

$2x + 4x = 180 \Rightarrow 6x = 180 \Rightarrow x = 30$.

Asked in: MH-SSC-9

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