Measuring and Drawing Angles with a Protractor

This video tutorial explains how to measure and draw angles using a protractor. It covers the steps to align the vertex and rays correctly, ensuring accurate measurements. The video provides examples of measuring angles of 60 and 137 degrees, emphasizing the importance of starting from zero to avoid errors. Additionally, it demonstrates drawing angles with known measurements, such as 118 and 41 degrees, using the protractor's straight edge. The tutorial concludes with a call to action to like and subscribe for more content.

What tool is used to measure angles?

• Ruler

• Caliper

• Compass

• Protractor

Tags

CCSS.4.MD.C.6

Where should the vertex of the angle be placed when using a protractor?

• Outside the protractor

• At any point

• On the protractor's straight edge

• At the center point of the protractor

Tags

CCSS.4.MD.C.6

What is the correct way to read an angle measurement from a protractor?

• Start from 180 degrees

• Start from 100 degrees

• Start from 90 degrees

• Start from 0 degrees

Tags

CCSS.4.MD.C.6

What incorrect measurement results if you start counting from 180 degrees for a 60-degree angle?

• 180 degrees

• 30 degrees

• 120 degrees

• 60 degrees

Tags

CCSS.4.MD.C.6

How can you extend short rays when measuring angles?

• Use a compass

• Use a ruler

• Guess the extension

• Extend them visually

Tags

CCSS.4.MD.C.6

What should be used to extend the rays if they are too short?

• A pencil

• A piece of string

• A straight edge

• A laser pointer

Tags

CCSS.4.G.A.1

What is the first step in drawing an angle using a protractor?

• Place the protractor's center point

• Draw the ray

• Mark the points

• Align the protractor

Tags

CCSS.4.MD.C.6

How do you ensure the accuracy of the angle drawn?

• Draw freehand

• Estimate the angle

• Use a flexible ruler

• Align the zero mark of the protractor

Tags

CCSS.4.MD.C.6

What should you do after marking the desired angle measurement on the protractor?

• Remove the protractor immediately

• Draw the angle

• Check the measurement again

• Use a compass to verify

Tags

CCSS.4.MD.C.6

When drawing angle KLM, what is the measure of the angle?

• 41 degrees

• 90 degrees

• 60 degrees

• 118 degrees

Tags

CCSS.4.MD.C.6