Verifying the Given Lines Parallel or Not

Q. Two lines are parallel, if they ____.

1. Intersect each other.
2. Intersect at right angles
3. Never intersect each other
4. None of the above

Q. Line AB is parallel to line CD is symbolically represented as:

1. AB = CD
2. $AB\cong CD$
3. $AB\perp CD$
4. AB // CD

Q. Two lines are parallel, if they ____.

1. Intersect each other.
2. None of the above
3. Intersect at right angles
4. Never intersect each other

Q. Identify the properties of parallel lines.

1. Parallel lines lie on the same plane.
2. Parallel lines do not intersect even when produced upto any extent on either sides.
3. A pair of parallel lines form an angle of ${90}^{\circ }$
4. Parallel lines are straight lines.

Q. Why the magnitude of 2 anti parallel vector is -AB in dot product

Q. Mark (✓) against the correct answer
In the given figure, AOB is a straight line, ∠AOC = 68° and ∠BOC = x°.
The value of x is



(a) 32
(b) 22
(c) 112
(d) 132

Q. Mark (✓) against the correct answer
In the given figure, AOB is a straight line and the ray OC stands on it.
If ∠BOC = 132°, then ∠AOC = ?



(a) 68°
(b) 48°
(c) 42°
(d) none of these

Q. If the distance between mid points of two parallel lines is 10 cm then the distance between them is

1. 5 cm
2. 10 cm
3. 20 cm
4. 15 cm

Q. Observe the following figure PQRS, the sides parallel to each other are

1. PS and QR
2. PQ and QR
3. PS and PQ
4. PQ and SR

Q. Observe the following figure PQRS, the sides parallel to each other are

1. PQ and SR
2. PS and PQ
3. PQ and QR
4. PS and QR