MCQ
In Fig. $POQ$ is a line, then a is equal to:
- A$35^\circ$
- B$100^\circ$
- ✓$80^\circ$
- D$135^\circ$
Since, $POQ$ is a line.
Here, $\angle\text{POR}$, and $\angle\text{QOR}$ from a liner pair.
$\therefore\angle\text{POR}+\angle\text{QOR}=180^\circ [ \therefore$ Sum of the liner pair is $180^\circ ]$
$\Rightarrow100^\circ+\text{a}=180^\circ$
$\Rightarrow\text{a}=180^\circ-100^\circ=80^\circ$
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