Two adjacent angles on a straight line are $50^{\circ}$ and $x$. Then $x$ is

Two adjacent angles on a straight line are $50^{\circ}$ and $x$. Then $x$ is
  1. $130^{\circ}$
  2. $50^{\circ}$
  3. $40^{\circ}$
  4. $90^{\circ}$

Solution

Linear pair: $50 + x = 180 \Rightarrow x = 130^{\circ}$.

Asked in: MH-SSC-9

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