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Constructions — MATHS STD 7 — Question

Gujarat BoardEnglish MediumSTD 7MATHSConstructions1 Mark
MCQ
Mark $(\checkmark)$ against the correct answer.In the given figure, $AOB$ is a straight line, $\angle\text{AOC}=68^\circ$ and $\angle\text{BOC}=\text{x}^\circ$. The value of $x$ is:
  • A
    $32$
  • B
    $22$
  • ✓
    $112$
  • D
    $132$
✓

Answer

Correct option: C.
$112$
In the figure $\angle\text{AOC}=68^\circ$
But $\angle\text{AOC}+\angle\text{BOC}=180^\circ$ (Linear pair)
$68^\circ+\text{x}=180^\circ$
$\Rightarrow\text{x}=180^\circ-68^\circ=112^\circ$

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