Measuring Angles and Their Types

This video tutorial explains how to measure different types of angles: acute, obtuse, and reflex. It provides step-by-step instructions on using a protractor to measure angles accurately. The tutorial also covers alternative methods for measuring reflex angles, including using a ruler and subtracting from 360 degrees.

What tool is essential for measuring angles in this video?

• Calculator

• Protractor

• Compass

• Ruler

When measuring an acute angle, where should the zero line of the protractor be placed?

• At the center of the protractor

• Along the angle line

• At the top of the protractor

• Along the arc

What is the degree measure of the acute angle demonstrated in the video?

• 50 degrees

• 40 degrees

• 60 degrees

• 30 degrees

How do you know when an angle is obtuse?

• It is more than 180 degrees

• It is exactly 90 degrees

• It is less than 90 degrees

• It is more than 90 degrees but less than 180 degrees

What is the degree measure of the obtuse angle demonstrated in the video?

• 120 degrees

• 135 degrees

• 150 degrees

• 165 degrees

What is a reflex angle?

• An angle between 90 and 180 degrees

• An angle between 180 and 360 degrees

• An angle less than 90 degrees

• An angle exactly 360 degrees

What is the degree measure of the reflex angle calculated using the protractor method?

• 326 degrees

• 316 degrees

• 306 degrees

• 336 degrees

What is the first step in the alternative method for measuring a reflex angle?

• Add to 360 degrees

• Subtract from 180 degrees

• Measure the acute angle

• Measure the obtuse angle

What is the acute angle measure used in the alternative method for calculating the reflex angle?

• 34 degrees

• 64 degrees

• 44 degrees

• 54 degrees

What is the final reflex angle measure using the alternative method?

• 306 degrees

• 316 degrees

• 326 degrees

• 336 degrees