MCQ
If two lines intersect each other then:
- ACorresponding angles are equal.
- BAlternate interior angles are equal.
- CCo-interior angles are equal.
- ✓Vertically opposite angles are equal.
✓
Answer
Correct option: D.
Vertically opposite angles are equal.
$\angle\text{A}+\angle\text{B}=180^\circ ($Linear Pair$)$
$\angle\text{B}+\angle\text{C}=180 ($Linear Pair$)$
On equating above equations, we get
$\angle\text{A}+\angle\text{B}=\angle\text{B}+\angle\text{C}$
$\angle\text{A}=\angle\text{C}$
Similarly, $\angle\text{B}=\angle\text{D}$
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