Free Printable Lines and Angles: Exercise 5.1 NCERT

1.

Supplementary angles always add up to

(a)

2.

Angles that add up to 90 degrees

a)

adjacent

b)

vertical

c)

complimentary

d)

supplementary

3.

Angle g and h are

a)

adjacent angles

b)

vertically opposite angles

c)

complementary

d)

supplementary

4.

Which equation would be used to solve for x?

a)

x + 90 = 42

b)

x + 42 = 90

c)

x + 42 = 180

d)

x - 42 = 180

5.

Find the missing angle.

a)

60

b)

70

c)

50

d)

140

6.

Two supplementary angles are in the ratio 2 : 4. Therefore, the measure of each angle is ______

a)

120 $\degree$ , 60 $\degree$

b)

60 $\degree$ , 120 $\degree$

c)

30 $\degree$ , 150 $\degree$

d)

50 $\degree$ , 130 $\degree$

7.

Classify the pair of angles shown.

a)

supplementary angles

b)

complementary angles

c)

vertically opposite angles

d)

corresponding angles

8.

Adjacent angles share a side and a ____

a)

vertex

b)

angle

c)

geometry

9.

Angles A and B are COMPLEMENTARY. Angle A has a measure of 30 degrees, what is the angle measure of angle B?

a)

30 degrees

b)

60 degrees

c)

90 degrees

d)

180 degrees

10.

What is the measure of angle A?

a)

30^o

b)

80^o

c)

75^o

d)

60^o

11.

Find the missing angle. Find x.

a)

20^o

b)

70^o

c)

160^o

d)

180^o

12.

Which are pairs of adjacent angles?

a)

∠COB & ∠DOA

b)

∠AOD & ∠AOC

c)

∠COB & ∠AOD

d)

∠BOD & ∠AOC

13.

If the measure of ∠2 is 83°, what is the measure of ∠3?

a)

7°

b)

17°

c)

83°

d)

97°

14.

What is a linear pair?

a)

two angles that are non-adjacent and whose non-common sides form a straight line.

b)

two angles that are adjacent and whose non-common sides form a straight line.

c)

two angles that are non-adjacent and whose common sides form a straight line.

d)

two angles that are adjacent and whose non-common sides form a straight line.

15.

Which of the following is a linear pair?

a)

b)

c)

d)

16.

Identify the linear pair in the given figure.

a)

$\angle2\ and\ \angle5$

b)

$\angle1\ and\ \angle2$

c)

$\angle1\ and\ \angle4$

d)

$\angle2\ and\ \angle3$

17.

All of the following are linear pairs, EXCEPT

a)

b)

c)

d)

18.

What is the measure of $\angle BOC$

a)

122

b)

142

c)

132

d)

128

19.

Which of the following statements is NOT true?

a)

A linear pair creates a 180 degree angle.

b)

A linear pair is made using three or more angles.

c)

A linear pair is created using two adjacent, supplementary angles.

d)

A linear pair creates a line.

Lines and Angles: Exercise 5.1 NCERT

Total questions: 19

Worksheet time: 12mins

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