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Practice Time 7B

1. In the given figure, Line PQ is a transversal of two lines AB and CD. Identify the given pairs of
angles as adjacent angles, vertically opposite angles, alternate angles, corresponding angles:
P
2 1 B
A 3 4

C 6 5
7 8 D

Q
(a) ∠1 and ∠2 (b) ∠1 and ∠3 (c) ∠3 and ∠5 (d) ∠4 and ∠6

(e) ∠3 and ∠7 (f) ∠6 and ∠8
2. Give reasons why lines AB and CD are parallel to each other in each of the following cases:

P
P A D 110°
E
(a) (b) A E B
60° 70°
F
C F D
120°
B C Q
Q
3. In the given figure, ∠3 = 55°, find all the other angles.

p

2 1
3 4 m
6 5
7 8 n

4. In the given figure, AB || CD || EF. Find the value of x.

A B
70°

E F
130°
x°
C D

5. In the following figure, AB || CD. Find the value of x, y and z.

A x y B
z

C 45° 35° D

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