4.MD.6

Support Videos & Extra Practice

In this standard, students are expected to measure angles using a protractor.

Acute angle: less than 90 degrees

Right angle: exactly 90 degrees

Obtuse angle: between 91 and 179 degrees

Straight angle: 180 degrees

Introduction to protractorsIn this lesson you will learn what tool is used to measure angles by exploring the properties of protractors.

Measure angles to the nearest degree with protractorsIn this lesson you will learn how to measure an angle opening that isn’t a multiple of ten by learning how to read protractors precisely.

Creating Angles Practice

Determining Angles with Protractors Practice

Finding Angles Practice

Determining Angles with Protractors Practice

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