Understanding Angle Measurements

The video tutorial explains how angles are measured in degrees, using a circle as a reference. It introduces key reference angles like 90 and 45 degrees, and explains how to calculate angles using a circle. The tutorial also covers how to measure angles with a protractor, providing a practical example. Reflex angles and their properties are discussed, and the video concludes with a summary and links to further resources.

What is the measurement of an angle that is not very open?

• 20 degrees

• 40 degrees

• 10 degrees

• 30 degrees

Which angle is typically marked with a little box?

• 120 degrees

• 90 degrees

• 60 degrees

• 45 degrees

Which angle is known as a right angle?

• 30 degrees

• 90 degrees

• 45 degrees

• 60 degrees

What is the total degree measurement of a full circle?

• 180 degrees

• 270 degrees

• 360 degrees

• 450 degrees

What is the degree measurement of a straight line across a circle?

• 270 degrees

• 180 degrees

• 360 degrees

• 90 degrees

What is the degree measurement of an angle that is 90 degrees less than 180 degrees?

• 45 degrees

• 60 degrees

• 90 degrees

• 120 degrees

Which of the following is a multiple of 45 degrees?

• 150 degrees

• 135 degrees

• 90 degrees

• 60 degrees

What is the degree measurement of an angle that is 30 degrees more than 90 degrees?

• 120 degrees

• 135 degrees

• 100 degrees

• 150 degrees

What is the degree measurement of an angle that is 45 degrees more than 90 degrees?

• 120 degrees

• 150 degrees

• 135 degrees

• 180 degrees

What is the degree measurement of an angle that is 30 degrees less than 90 degrees?

• 45 degrees

• 60 degrees

• 75 degrees

• 90 degrees