Measuring Angles

The video tutorial explains how to measure angles using a protractor. It begins with an introduction to the protractor, describing its parts and scales. The tutorial then provides step-by-step instructions for measuring angles PQR and ABC, emphasizing the importance of choosing the correct scale based on the direction of the angle's arms. The video concludes by encouraging viewers to practice measuring angles on their own.

What is the purpose of the baseline on a protractor?

• To indicate the degree scale

• To mark the center point

• To align with one arm of the angle

• To measure the length of an angle

How are the scales on a protractor marked?

• From 0 to 360 degrees

• From 0 to 180 degrees

• From 0 to 90 degrees

• From 0 to 270 degrees

What is the unit used to measure angles?

• Meter

• Centimeter

• Inch

• Degree

When measuring angle PQR, which scale should be used if arm PQ points to the right?

• Neither scale

• Both scales

• Inner scale

• Outer scale

What is the correct position for the protractor's center point when measuring an angle?

• On the outer scale

• On the vertex of the angle

• On the baseline

• On the inner scale

Which scale is used to measure angle ABC if arm AB points to the left?

• Neither scale

• Inner scale

• Outer scale

• Both scales

At what degree does the arm BC cross the outer scale when measuring angle ABC?

• 30 degrees

• 45 degrees

• 60 degrees

• 90 degrees