Worksheet: Measuring Angles

In this worksheet, we will practice identifying correct and incorrect uses of protractors for measuring angles.

Q1:

The diagram shows a protractor being used to measure the angle 𝜃 . What is the value of 𝜃 , in degrees?

Q2:

Chloe uses a protractor to measure the angle 𝜃 , as shown in the diagram. She gets a value of 2 8 . Which of the following statements explains why this answer is incorrect?

  • AThe maximum resolution of the protractor is 1 0 , so the angle should be measured as 3 0 .
  • BThe resolution of the protractor is 0 . 5 , so the angle should be measured as 2 7 . 5 .
  • CThe center of the protractor was not placed at the vertex of the two lines that form the angle 𝜃 .

Q3:

The diagram shows a protractor being used to measure the angle 𝜃 . What is the value of 𝜃 , in degrees?

  • A 1 5 3
  • B 1 4 2
  • C 1 4 7
  • D 3 7
  • E 3 3

Q4:

Which of the following shows the correct position in which a protractor must be placed in order to measure the angle 𝜃 ?

  • A
  • B
  • C
  • D

Q5:

The diagram shows a protractor being used to measure the angle 𝜃 . What is the value of 𝜃 , in degrees?

  • A 1 8 0
  • B 1 2 1
  • C 1 1 9
  • D 6 1
  • E 6 5

Q6:

Which of the following items can be used to measure angles?

  • AA protractor
  • BA balance
  • CA thermometer
  • DA micrometer
  • EA meter ruler

Q7:

The diagram shows two straight lines that intersect to form an obtuse angle and a reflex angle between them. A 3 6 0 protractor is positioned at the intersection between the two lines.