‘‘For every line `l` and for every point P not lying on a given line `l`, there exists a unique line `m` passing through P and parallel to `l`” is known as Playfair’s axiom.

Given a line and a point, not on the line, there is one and only ........... line which passes through the given point and is .......to the given line.

In fig. if lines l and m are parallel lines then x=

Draw a line l ,also draw a line m parallel to l at a distance of 4 cm.

In the adjoining figure, the value of x that will make the lines l and m parallel is

Line AB perpendicular to l is written as

Find equation of the line parallel to the line 3x-4y+ 2=0 and passing through the point (-2, 3).

A line L_1 passes through the point 3i and parallel to the vector − i + j + k and another line L_2 passes through the point i + j and parallel to the vector i + k then point of intersection of the lines is