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Geometry: Estimate Angles

In this worksheet, students use their knowledge to estimate an angle. Then they measure the angle to see how close they were.

'Geometry: Estimate Angles' worksheet

Key stage:  KS 2

Curriculum topic:  Geometry: Properties of Shapes

Curriculum subtopic:  Know Angles and Degrees

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

In this worksheet, we will learn how to estimate the size of each angle.

 

Problem:

Estimate the size of the angle.

Angle

Think of key angles such as 30°, 60°, 90°, 120° and 180°

Answer:    The angle is about 120°.

Using a protractor the size of the angle = 116°

Estimate the size of the angle.

Angle

109

135

164

49

Estimate the size of the angle.

Angle

98

143

185

275

Estimate the size of the angle.

Angle

58

85

285

138

Estimate the size of the angle.

Angle

40

125

285

89

Estimate the size of the angle.

Angle

145

56

125

89

Estimate the size of the angle.

Angle

185

56

115

254

Estimate the size of the angle.

Angle

165

117

45

224

Estimate the size of the angle.

Angle

50

90

150

120

Estimate the size of the angle.

Angle

160

30

90

109

Estimate the size of the angle.

Angle

100

90

56

85

  • Question 1

Estimate the size of the angle.

Angle

CORRECT ANSWER
109
EDDIE SAYS
The angle is obtuse, so it's more than 90. A protractor can be used for checking.
  • Question 2

Estimate the size of the angle.

Angle

CORRECT ANSWER
143
EDDIE SAYS
The angle is obtuse, so it's more than 90. Use a protractor to check.
  • Question 3

Estimate the size of the angle.

Angle

CORRECT ANSWER
138
EDDIE SAYS
The angle is obtuse, so it's more than 90. Use a protractor to check.
  • Question 4

Estimate the size of the angle.

Angle

CORRECT ANSWER
89
EDDIE SAYS
The angle looks close to 90, or a right angle. Use a protractor to check.
  • Question 5

Estimate the size of the angle.

Angle

CORRECT ANSWER
56
EDDIE SAYS
The angle is acute, so it's less than 90. Use a protractor to check.
  • Question 6

Estimate the size of the angle.

Angle

CORRECT ANSWER
115
EDDIE SAYS
The angle is obtuse, so it's more than 90. Use a protractor to check.
  • Question 7

Estimate the size of the angle.

Angle

CORRECT ANSWER
117
EDDIE SAYS
The angle is obtuse, so it's more than 90. Use a protractor to check.
  • Question 8

Estimate the size of the angle.

Angle

CORRECT ANSWER
120
EDDIE SAYS
The angle is obtuse, so it's more than 90. Use a protractor to check.
  • Question 9

Estimate the size of the angle.

Angle

CORRECT ANSWER
109
EDDIE SAYS
The angle is obtuse, so it's more than 90. A protractor can be used for checking.
  • Question 10

Estimate the size of the angle.

Angle

CORRECT ANSWER
56
EDDIE SAYS
The angle is acute, so it's less than 90. Use a protractor to check.
---- OR ----

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