a straight line extending from a point
the state of being perpendicular to something
a line with one of its end points extended
a figure made when straight lines cross
a straight line at right angles to another line
in mathematics, a line on which each point is associated with a real number
a straight line that continually approaches a curve, called
The two lines cross each other at right angles.
in mathematics, a straight line that crosses a curved line or surface at a right angle