If `l, m, n` are lines in the same plane such that `l` intersects `m` and `n||m` then `n` intersects `l` also

If 1;m;n are lines in the same plane such that 1 intesects m and n|m ; then 1 intersects n also.

n,l,m are three lines in the same plane.If l intersects m and nllm, then find the relation betweenl and n.

If l,n are three lines such that lm and n perp l prove that n perp m.

If l , m, n are the direction consines of a line, then

If l,m,n are direction cosines of the line then -l,-m,-n can be

l, m and n are three parallel lines intersected by transversals p and q such that l, m and n cut off equal intercepts AB and BC on p (see Fig. 8.28). Show that l, m and n cut off equal intercepts DE and EF on q also

Two lines l and m interset at the O and P is Point on a line n Passing through the point O such that P is equidistant from l and m. Prove that n is the bisectof the angle formed by l and m

The direction cosines l, m and n of two lines are connected by the relations l+m+n=0 and lm=0 , then the angle between the lines is

In the figure , l||m & l||n then x is -