In Fig., mark the parallel lines using the notation single arrow, double arrow etc.. Mark the angle between perpendicular lines with a square symbol.

(i) How did you spot the perpendicular lines?
(i) How did you spot the perpendicular lines?
Perpendicular lines are lines which each other at \(=\) \(^\circ\)
(ii) How many perpendicular angles marked in the given figure?
(iii) How did you spot the parallel lines?
Parallel lines are a pair of lines that lie on the plane, and however far we extend them at both ends.
(iv) How many set of parallel lines are there in the given figure?