Question

Which angles in the given figure are complementary?

• A. $\angle 1$ and $\angle 2$
• B. $\angle 2$ and $\angle 3$
• C. $\angle 3$ and $\angle 4$
• D. $\angle 4$ and $\angle 1$

Answer 1

Answer: (B)

$\angle 2$ and $\angle 3$

We know, two angles whose sum is equal to ${90}^o$ are known as complementary angles.

Here,

the sum, $\angle 2+\angle 3$, is vetrically opposite to a perpendicular.

$\Rightarrow \angle 2+\angle 3={90}^{\circ }$.

Hence $\angle 2$ and $\angle 3$ are complementary.

Therefore, option $B$ is correct.