4th Grade Measuring Angles Worksheets
4th Grade Measuring Angles: measure and draw angles with a protractor and find missing angles. Every worksheet is free, prints as a PDF with an answer key, and can be assigned online. The ones teachers open most are first.
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4md6
Choose the correct scale on the protractor (inner or outer) to read the angle correctly. Read and write the angle measure using the degree symbol (°).
4md7
Practice finding a missing angle when a larger angle is split into two smaller angles Subtract a known part from the total angle to find the unknown part Read angle diagrams that show how two angles combine to form a bigger angle
4md5a
Look at an angle and decide if it is acute, right, obtuse, or straight. Use the degree measure of an angle to help classify it correctly. Recognize benchmark angles like 90° and 180° and compare other angles to them.
4md6
Learn to choose the correct scale on the protractor when the angle does not start at 0. Measure angles in degrees by reading where the other ray crosses the protractor. Write the angle measure using the degree symbol (°).
4md5a
Look at an angle and make a reasonable guess of its size in degrees. Use benchmark angles like 90°, 180°, and 360° to estimate other angles. Compare a few degree choices and pick the one that is closest to the angle shown.
4md6
Use a protractor correctly by lining up the center point and the baseline with a ray. Draw an angle with a given number of degrees by marking the correct spot on the protractor and drawing the second ray. Read degree measurements on a protractor, including choosing the correct scale. Label the vertex and rays of an angle and name the angle you created.
4md6
Learn how to place a protractor correctly by lining up the center on the vertex and the baseline on one ray. Practice reading the correct scale on a protractor to measure an angle in degrees. Write the angle measure using the degree symbol (°).
4md7
Practice drawing a new ray from a vertex at a given degree mark on a protractor. Find a missing angle when two adjacent angles make a larger angle. Use addition and subtraction with angle measures to figure out the unknown angle.
4g1 4md6
Identify acute, right, obtuse, and reflex angles in a drawing. Count how many of each type of angle a shape has. Use angle size clues (smaller than 90°, exactly 90°, between 90° and 180°, greater than 180°) to sort angles correctly. Pay attention to where the angle is formed at a vertex so you don’t count the wrong corner.
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