Measuring Angles: Types, Classification, and Using a Protractor

The video tutorial covers the classification and measurement of angles. It introduces different types of angles such as acute, right, obtuse, reflex, and full turn. The tutorial explains how to use a protractor to measure angles accurately, emphasizing the importance of classifying angles to choose the correct scale on the protractor. It also demonstrates measuring both simple and complex angles, including reflex angles, by calculating the difference from a full turn.

Which type of angle is greater than 90 degrees but less than 180 degrees?

• Reflex angle

• Obtuse angle

• Right angle

• Acute angle

What is the purpose of the two scales on a protractor?

• To measure angles with different protractors

• To measure angles in different units

• To measure both acute and obtuse angles

• To measure angles in different directions

Where should the center point of a protractor be placed when measuring an angle?

• On the baseline of the angle

• On the midpoint of the angle

• On the vertex of the angle

• On the outer edge of the angle

When measuring an acute angle, which scale on the protractor should you use?

• The outer scale

• The inner scale

• The scale with larger numbers

• The scale with smaller numbers

If an angle measures 62 degrees, what type of angle is it?

• Reflex angle

• Obtuse angle

• Right angle

• Acute angle

How do you calculate a reflex angle if the internal angle is known?

• Add 180 degrees to the internal angle

• Subtract the internal angle from 360 degrees

• Subtract 90 degrees from the internal angle

• Double the internal angle

What is the measure of a full turn in degrees?

• 360 degrees

• 270 degrees

• 180 degrees

• 90 degrees