Classifying Angles

Multiple Choice

How many degrees are there in a full rotation or a full circle?

• 90°

• 180°

• 270°

• 360°

Multiple Choice

Which type of angle is exactly 180°?

• Acute angle

• Right angle

• Straight angle

• Obtuse angle

Open Ended

What is the main difference between an acute angle and an obtuse angle?

Multiple Select

Select all the angles that are less than 90° from the following: 62°, 120°, 54°, 180°.

• 62°

• 120°

• 54°

• 180°

Open Ended

Explain how you can identify a right angle in a diagram, even if the angle is rotated.

Multiple Choice

Which of the following is NOT a property of a right angle?

• It measures exactly 90°

• It can be in any orientation

• It is always less than 90°

• It is shown with a small box in the corner

Multiple Choice

Which of the following best describes an obtuse angle?

• An angle less than 90°

• An angle exactly 90°

• An angle more than 90° but less than 180°

• An angle exactly 180°

Multiple Choice

Based on the examples shown, what is the range of degrees for obtuse angles?

• Less than 90°

• More than 90° but less than 180°

• Exactly 180°

• More than 180°

Open Ended

Explain the difference between an obtuse angle and a straight angle, using the information from the images.

Open Ended

Why do you think it is important to measure angles in degrees?

Multiple Choice

How many degrees are there in a full revolution or a full circle?

• 180°

• 90°

• 360°

• 270°