Question

In the figure, $\overrightarrow{DC}\perp \overline{AB}.$ Then the measure of $\angle CDB$ is

• A. ${180}^{\circ }$
• B. ${45}^{\circ }$
• C. ${90}^{\circ }$
• D. ${120}^{\circ }$

Answer 1

The correct option is C ${90}^{\circ }$

$\angle CDB={90}^o$ since the lines are perpendicular to each other.