Understanding and Using Protractors

What is the primary use of a protractor?

• To weigh objects

• To calculate area

• To measure and draw angles

• To measure temperature

Which type of protractor is most commonly used?

• Semicircle and circular protractors

• Hexagonal protractor

• Rectangular protractor

• Triangular protractor

What is an angle called if it measures exactly 180°?

• Obtuse angle

• Acute angle

• Right angle

• Straight angle

Which angle is greater than 90° but less than 180°?

• Reflex angle

• Right angle

• Obtuse angle

• Acute angle

What is the first step in measuring an angle with a protractor?

• Count the degree lines

• Place the protractor's center at the angle's vertex

• Align the zero with one side of the angle

• Read the outer scale

How do you ensure an accurate measurement with a protractor?

• Use a calculator

• Estimate the angle size

• Count the degree lines carefully

• Use a ruler

Which angle should you draw if asked to create a 90° angle?

• Right angle

• Acute angle

• Reflex angle

• Obtuse angle

What should you do if an angle is measured in an anticlockwise direction?

• Use the inner scale

• Use the outer scale

• Estimate the angle

• Use a different protractor

How can you estimate the size of an angle before measuring?

• By using a calculator

• By comparing it to a right angle

• By using a ruler

• By guessing

What is the purpose of the inner scale on a protractor?

• To measure weight

• To measure angles in a clockwise direction

• To measure temperature

• To measure angles in an anticlockwise direction