Question

define perpendicular lines (1 point)
two lines that will never intersect and are the same distance apart because their slopes are equal
two lines that intersect to form a 90 degree angle
any two lines that intersect

Explanation:

Perpendicular lines are defined as two lines that intersect at a right - angle (90 degrees). Lines that never intersect with equal slopes are parallel. Just any two intersecting lines are not perpendicular by default.

Answer:

Two lines that intersect to form a 90 degree angle