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Revision Questions on Lines and Angles

Total questions: 25

Worksheet time: 15mins

Name
Class
Date
1.

What type of angle is formed when two lines are perpendicular?

a)

Obtuse angle

b)

Acute angle

c)

Straight angle

d)

Right angle

2.

Identify the angle shown: ∠ABC = 90°

a)

Straight angle

b)

Right angle

c)

Obtuse angle

d)

Acute angle

3.

Classify the angle as acute, obtuse, or right: ∠XYZ = 100°

a)

Reflex

b)

Straight

c)

Obtuse

d)

Acute

4.

Which pair of lines are parallel in the given figure?

a)

Line AB and Line CD are parallel.

b)

Line AB and Line GH are parallel.

c)

Line CD and Line EF are parallel.

d)

Line AB and Line EF are parallel.

5.

Calculate the missing angle: ∠PQR = 45°, ∠PRQ = 90°

a)

30

b)

60

c)

75

d)

45

6.

Identify the type of angle: ∠MNO = 120°

a)

Acute angle

b)

Right angle

c)

Straight angle

d)

Obtuse angle

7.

How many right angles are there in a square?

a)

2

b)

3

c)

4

d)

5

8.

Which pair of lines are perpendicular in the given figure?

a)

The pair of lines with slopes 1/2 and -2 are perpendicular.

b)

The pair of lines with slopes -1 and 1 are perpendicular.

c)

The pair of lines with slopes 3 and -3 are perpendicular.

d)

The pair of lines with slopes 2 and -1/2 are perpendicular.

9.

Classify the angle as acute, obtuse, or right: ∠LMN = 75°

a)

obtuse

b)

reflex

c)

straight

d)

acute

10.

Identify the type of angle: ∠DEF = 30°

a)

Straight angle

b)

Obtuse angle

c)

Acute angle

d)

Right angle

11.

What is the sum of angles in a triangle?

a)

90 degrees

b)

180 degrees

c)

270 degrees

d)

360 degrees

12.

Identify the angle shown: ∠GHI = 135°

a)

45 degrees

b)

180 degrees

c)

135 degrees

d)

90 degrees

13.

Which pair of lines are parallel in the given figure?

a)

The pair of lines y = 2x + 3 and y = 2x - 1 are parallel.

b)

The pair of lines y = 2x + 3 and y = 2x + 1 are parallel.

c)

The pair of lines y = 2x + 3 and y = 3x - 1 are parallel.

d)

The pair of lines y = 2x + 3 and y = -2x - 1 are parallel.

14.

Calculate the missing angle: ∠JKL = 60°, ∠LKM = 120°

a)

45

b)

180

c)

90

d)

30

15.

Classify the angle as acute, obtuse, or right: ∠OPQ = 95°

a)

acute

b)

reflex

c)

obtuse

d)

straight

16.

Identify the type of angle: ∠UVW = 180°

a)

Straight angle

b)

Obtuse angle

c)

Reflex angle

d)

Acute angle

17.

How many right angles are there in a rectangle?

a)

4

b)

8

c)

2

d)

6

18.

Which pair of lines are perpendicular in the given figure?

a)

The pair of lines FG and HI are perpendicular.

b)

The pair of lines EF and GH are perpendicular.

c)

The pair of lines AB and CD are perpendicular.

d)

The pair of lines BC and DE are perpendicular.

19.

Classify the angle as acute, obtuse, or right: ∠RST = 85°

a)

straight

b)

obtuse

c)

reflex

d)

acute

20.

Identify the type of angle: ∠IJK = 150°

a)

Right angle

b)

Acute angle

c)

Straight angle

d)

Obtuse angle

21.
What type of angle is this? 
a)
acute
b)
obtuse
c)
right
22.
What kind of lines are shown?
a)
parallel lines
b)
perpendicular lines
c)
straight lines
d)
open lines
23.

Calculate the missing angle.

a)

110º

b)

80º

c)

70º

d)

60º

24.
a)
x = 118
b)
x = 108
c)
x = 28
d)
x = 58
25.
a)
55o alternate
b)
55o corresponding
c)
125o alternate
d)
125o corresponding