If a line is perpendicular to one of two given parallel lines, then prove that it is also perpendicular to the other line.

Line AB perpendicular to l is written as

When do you say that a line is the perpendicular bisector of another line?

Two lines are respectively perpendicular to two parallel lines. Show that they are parallel to each other.

Find the equation of the plane passing through the point (3,-3, 1) and perpendicular to the line joining the points (3, 4, - 1) and (2, - 1,5). Also find the coordinates of the foot of the perpendicular, the equation of the perpendicular line and the length of perpendicular drawn from the origin to the plane.

Study the digram.The line l is perpendicular to line m. Identify any two line segments for which PE is the perpendicular bisector.

A perpendicular bisector of line 12.5 cm divides the line into

If a line is drawn parallel to one side of a triangle to intersect the other two sides in distinct points, the other two sides are divided in the same ratio. Prove it.