Question

question 9 of 10
which of the following best describes perpendicular lines?
a. lines that are not in the same plane
b. lines that meet at a $45^{\circ}$ angle
c. lines that meet at a $90^{\circ}$ angle
d. lines that are coplanar and do not intersect

Explanation:

Perpendicular lines are defined as lines that intersect each other at a right angle, which measures 90°. Option A describes skew lines, option B is an incorrect angle measure, and option D describes parallel lines.

Answer:

C. Lines that meet at a 90° angle