Perpendicular lines are lines that intersect at right angles. ... That is, the slopes of perpendicular lines are opposite reciprocals . (Exception: Horizontal and vertical lines are perpendicular, though you can't multiply their slopes, since the slope of a vertical line is undefined.)

What are perpendicular lines examples?

Lines that intersect each other forming a right angle are called perpendicular lines. Example: the steps of a straight ladder; the opposite sides of a rectangle. The symbol used to denote two perpendicular lines: ⊥ ⊥ .

What are perpendicular lines answer?

If two lines meet or intersect at a point to form a right angle, they are called perpendicular lines. ... We use the symbol ⊥ to represent perpendicular lines.