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Now that you know what angles are, you're ready to start measuring them! The tool we use is called a "protractor", and in this lesson we'll review how to use it, and how to read the numbers on a protractor to measure any angle. You'll get some practice both creating angles, and also measuring some of the many angles you can find in the real world. Ready? Set. Go Measure!
Key words: angles, measure, protractors
Aligned with Common Core State Standard - Math
Measurement & Data
4.MD.C.5b - Geometric measurement: understand concepts of angle and measure angles: An angle that turns through n one-degree angles is said to have an angle measure of n degrees.
4.MD.C.6 - Geometric measurement: understand concepts of angle and measure angles: Measure angles in whole-number degrees using a protractor. Sketch angles of specified measure.