The video tutorial demonstrates how to measure angles using a virtual protractor in a Khan Academy exercise. It introduces the tool, credits its creator, and provides step-by-step instructions for measuring different types of angles, including acute and obtuse angles. The tutorial emphasizes the correct placement of the protractor and the importance of aligning the 0-degree mark with one side of the angle. Through multiple examples, the video illustrates the process of rotating the protractor and reading the angle measurement accurately.

Who developed the virtual protractor used in the Khan Academy exercise?

• Bill Gates

• Sal Khan

• Elon Musk

• Omar Rizwan

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

• Put the center of the protractor at the vertex of the angle

• Rotate the protractor to 90 degrees

• Place the protractor on the table

• Align the protractor with the base of the angle

How do you align the protractor to measure an angle?

• Align the 45 mark with one side of the angle

• Align the 180 mark with one side of the angle

• Align the 90 mark with one side of the angle

• Align the 0 mark with one side of the angle

What type of angle is measured if the protractor points to 20 degrees?

• Acute angle

• Obtuse angle

• Right angle

• Straight angle

What is the characteristic of an obtuse angle?

• Less than 90 degrees

• Exactly 90 degrees

• Exactly 180 degrees

• More than 90 degrees

If an angle measures 110 degrees, what type of angle is it?

• Acute angle

• Right angle

• Reflex angle

• Obtuse angle

What is the approximate measurement of an angle if it points to 80 degrees on the protractor?

• 90 degrees

• 100 degrees

• 70 degrees

• 80 degrees

What is the correct way to position the protractor for measuring an angle?

• Place the 90 degree mark on one side of the angle

• Place the 0 degree mark on one side of the angle

• Place the 180 degree mark on one side of the angle

• Place the 0 degree mark outside the angle

What is the angle measurement if the protractor points to 70 degrees?

• Straight angle

• Obtuse angle

• Right angle

• Acute angle

What is the next step after learning to measure angles with a protractor?

• Learn to draw angles

• Learn to bisect angles

• Learn more about angle properties

• Learn to convert angles