Measuring Angles with a Protractor

This video tutorial teaches students how to measure angles using a protractor. It begins with an introduction to angles and degrees, explaining that angles are measured in degrees, similar to how lengths are measured in inches or feet. The tutorial covers different types of angles, such as right angles and straight angles, and explains the concept of a 360-degree circle. The video then demonstrates how to use a protractor to measure angles, providing step-by-step instructions and practice exercises. By the end of the lesson, students should be able to measure angles accurately using a protractor.

What unit is used to measure angles?

• Meters

• Liters

• Degrees

• Centimeters

Tags

CCSS.4.MD.C.6

How many degrees does a right angle have?

• 45

• 90

• 180

• 360

Tags

CCSS.4.G.A.1

What is the degree measure of a straight angle?

• 180

• 360

• 90

• 270

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

A complete turn around a point is how many degrees?

• 90

• 360

• 180

• 270

Tags

CCSS.4.MD.C.5B

CCSS.HSG.CO.A.1

What tool is used to measure angles?

• Protractor

• Compass

• Caliper

• Ruler

Tags

CCSS.4.MD.C.6

Where should the vertex of the angle be placed on the protractor?

• On the right edge

• On the left edge

• Anywhere

• At the center mark

Tags

CCSS.4.MD.C.6

When measuring an angle with a protractor, where do you start reading the scale?

• At 100

• At 0

• At 90

• At 10

Tags

CCSS.4.MD.C.6

What type of angle is less than 90 degrees?

• Straight

• Obtuse

• Acute

• Right

Tags

CCSS.4.G.A.1

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

• Straight

• Acute

• Right

• Obtuse

Tags

CCSS.4.G.A.1

What should you do if your measured angle does not make sense?

• Ignore it

• Guess the angle

• Measure again

• Change the protractor

Tags

CCSS.4.MD.C.6