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Worksheets

Exploring Lines and Angles

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

What type of angle measures less than 90 degrees?

a)

Reflex angle

b)

Acute angle

c)

Obtuse angle

d)

Straight angle

2.

What type of angle measures exactly 90 degrees?

a)

Obtuse angle

b)

Right angle

c)

Acute angle

d)

Straight angle

3.

What type of angle measures more than 90 degrees but less than 180 degrees?

a)

Acute angle

b)

Right angle

c)

Obtuse angle

d)

Straight angle

4.

How many degrees are in a straight angle?

a)

360 degrees

b)

180 degrees

c)

90 degrees

d)

120 degrees

5.

What is the measure of a right angle in degrees?

a)

90 degrees

b)

45 degrees

c)

120 degrees

d)

60 degrees

6.

If two angles are complementary, what is the sum of their measures?

a)

90 degrees

b)

45 degrees

c)

180 degrees

d)

60 degrees

7.

Identify the angle: 45 degrees.

a)

45 degrees

b)

90 degrees

c)

60 degrees

d)

30 degrees

8.

Identify the angle: 120 degrees.

a)

Straight angle

b)

Obtuse angle

c)

Right angle

d)

Acute angle

9.

Measure the angle using a protractor: 75 degrees.

a)

90 degrees

b)

75 degrees

c)

80 degrees

d)

70 degrees

10.

Measure the angle using a protractor: 150 degrees.

a)

180 degrees

b)

90 degrees

c)

120 degrees

d)

150 degrees

11.

Classify the angle of 30 degrees as acute, obtuse, or right.

a)

acute

b)

obtuse

c)

straight

d)

reflex

12.

Classify the angle of 95 degrees as acute, obtuse, or right.

a)

obtuse

b)

acute

c)

right

d)

straight

13.

If one angle measures 30 degrees, what is the measure of its complementary angle?

a)

90 degrees

b)

60 degrees

c)

45 degrees

d)

30 degrees

14.

If one angle measures 60 degrees, what is the measure of its complementary angle?

a)

15 degrees

b)

90 degrees

c)

45 degrees

d)

30 degrees

15.

What is the term for angles that add up to 180 degrees?

a)

Supplementary angles

b)

Vertical angles

c)

Complementary angles

d)

Adjacent angles

16.

What is the term for angles that add up to 90 degrees?

a)

Vertical angles

b)

Supplementary angles

c)

Adjacent angles

d)

Complementary angles

17.

Draw an acute angle using a protractor. What is its measure?

a)

Any angle greater than 90 degrees, for example, 120 degrees.

b)

Any angle less than 90 degrees, for example, 45 degrees.

c)

Any angle equal to 180 degrees, for example, 180 degrees.

d)

Any angle equal to 90 degrees, for example, 90 degrees.

18.

Draw an obtuse angle using a protractor. What is its measure?

a)

120 degrees

b)

150 degrees

c)

90 degrees

d)

135 degrees

19.

If two angles are supplementary, what is the sum of their measures?

a)

360 degrees

b)

180 degrees

c)

90 degrees

d)

45 degrees

20.

What is the measure of an angle that is neither acute nor obtuse?

a)

90 degrees

b)

45 degrees

c)

180 degrees

d)

360 degrees