Question

define perpendicular lines.
a. lines that cut across two or more lines
b. two coplanar lines that do not intersect
c. two coplanar lines that intersect at a 90 - degree angle
d. two non - coplanar lines that do not intersect

Explanation:

Perpendicular lines are defined as two coplanar lines that intersect at a right - angle (90 - degree angle). Option A describes transversals. Option B describes parallel lines. Option D describes skew lines.

Answer:

C. Two coplanar lines that intersect at a 90 - degree angle