Which of the following are models for perpendicular lines-
(a) The adjacent edges of a table top.
(b) The lines of a railway track.
(c) The line segments forming the letter ‘L’.
(d) The letter V.
(a) The adjacent edges of a table top are perpendicular to each-other.
(b) The lines of a railway track are parallel to each-other.
(c) The line segments forming the letter ‘L’ are perpendicular to each-other.
(d) It forms an acute angle as its sides are inclined at a point.