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 28. Which of the following statements explains why this answer is incorrect?

  • AThe maximum resolution of the protractor is 10, so the angle should be measured as 30.
  • BThe resolution of the protractor is 0.5, so the angle should be measured as 27.5.
  • 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?

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?

Q6:

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

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

Q7:

The diagram shows two straight lines that intersect to form an obtuse angle and a reflex angle between them. A 360 protractor is positioned at the intersection between the two lines.

What is the size of the obtuse angle made by the lines?

  • A111
  • B127
  • C249
  • D93
  • E233

What is the size of the reflex angle made by the lines?

  • A249
  • B233
  • C93
  • D111
  • E127

Q8:

The diagram shows two straight lines that intersect to form an obtuse angle and a reflex angle between them. A 360 protractor is positioned at the intersection between the two lines. What is the size of the reflex angle made by the lines?

Q9:

The diagram shows two straight lines that intersect to form an obtuse angle and a reflex angle between them. A 360 protractor is positioned at the intersection between the two lines. What is the size of the reflex angle made by the lines?

Q10:

The diagram shows two straight lines that intersect to form an acute angle and a reflex angle between them. A 360 protractor is positioned at the intersection between the two lines. What is the size of the reflex angle made by the lines?

Q11:

The diagram shows two straight lines that intersect to form an acute angle and a reflex angle between them. A 360 protractor is positioned at the intersection between the two lines. What is the size of the reflex angle made by the lines?

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