Perpendicular lines.
Lines that that intersect each other at right angles on a plane are perpendicular lines.
Coordinate Plane
A square...!?!
The lines are perpendicular.
If two lines intersect at right angles then they are perpendicular!
Perpendicular lines intersect each other at right angles.
Lines that that intersect each other at right angles on a plane are perpendicular lines.
Lines that that intersect each other at right angles on a plane are perpendicular lines.
Coordinate Plane
A square...!?!
The lines are perpendicular.
Perpendicular lines form right angles when they intersect.
Perpendicular lines intersect to form right angles
If two lines intersect at right angles then they are perpendicular!
Lines that intersect right angles (ninety-degree angles) are described as perpendicular.
Lines that intersect at right angles
Perpendicular lines intersect at right angles.