Question

Which of the following are models for perpendicular lines

(a) The hour and minute hands of a wall-clock at 3 o'clock.

(b) Zebra crossing on roads.

(c) Two line segments forming the letter ‘T’.

(d) The oppisite edges of a carrom board.

Answer 1

Solution:

(a) Two line segments as the hour and minute hands at 3 o'clcok are perpendicular lines.

(b) Zebra crossing on roads are parallel lines.

(c) Two line segments forming the letter 'T' are perpendicular lines.

(d) The opposite edges of a carrom board are parallel lines.

Therfore, statements (a) and (c) are models of perpendicular lines.