Question

When two straight lines intersect, which of the following statements are true?

• A. (i) and (iii) are correct
• B. (ii) and (iii) are correct
• C. (i) and (iv) are correct
• D. (ii) and (iv) are correct

Answer 1

Answer: (B), (C)

The correct options are
B (ii) and (iii) are correct
C (i) and (iv) are correct

When two straight lines intersect, then the adjacent angles are supplementary and the opposite angles are equal. In the given diagram, two straight lines intersect.
$\angle 1$ and $\angle 3$ are opposite angles and are equal, while $\angle 1$ and $\angle 2$ are adjacent and supplementary.