Question

9 which pair of line segments appears to be perpendicular?

Explanation:

Step1: Recall the definition of perpendicular lines

Perpendicular lines intersect at a right angle ($90^{\circ}$).

Step2: Analyze the pairs

• For $\overline{BC}$ and $\overline{AD}$: In a rectangle (assuming the figure is a rectangle as it has four sides with opposite sides equal and parallel), $\overline{BC}$ and $\overline{AD}$ are parallel (not perpendicular).
• For $\overline{CD}$ and $\overline{BC}$: In a rectangle, adjacent sides like $\overline{CD}$ and $\overline{BC}$ intersect at a right angle, so they are perpendicular.

Answer:

$\overline{CD}$ and $\overline{BC}$