For the given figure, which one is the mirror line, l1 or l2 ?

Silver mirror test is given by which one of the following compounds ?

In the following figures, the mirror line (i.e., the line of symmetry) is given as a dotted line. Complete each figure performing reflection in the dotted (mirror) line. (You might perhaps place a mirror along the dotted line and look into the mirror for the image). Are you able to recall the name of the figure you complete?

The angle between the lines whose direction cosines satisfy the equations l+ m +n =0 and l^2= m^2 + n^2 is:

Study the diagram. The line l is perpendicular to line m (c) Identify any two line segements for which PE is the perpendicular bisector.

In the figure, l is the line of symmetry. Complete the diagram to make it symmetric.

Choose the correct relation between l_1 and l_2 ?

Choose the correct relation between l_1 and l_2 ?

Let L be the set of all lines in XY plane and R be the relation in L defined as R = {(L _(1) , L _(2)) : L _(1) is parallel to L _(2)}. Show that R is an equivalence relation. Find the set of all lines related to the line y = 2x +4.