Angle Calculations Worksheet
Practice calculating and identifying different types of angles with this Grade 4 math worksheet.
Includes
Standards
Topics
Angle Calculations
Name:
Date:
Score:
Read each question carefully and answer to the best of your ability. Use the protractor provided to measure angles as needed.
Identify each angle as acute, right, or obtuse.
Type of angle:
Type of angle:
Type of angle:
1. An angle that measures exactly 90 degrees is called a angle.
2. An angle that measures less than 90 degrees is called an angle.
3. An angle that measures more than 90 degrees but less than 180 degrees is called an angle.
4. A straight angle measures exactly degrees.
Use the protractor to measure the following angles and write down their measurements.
Measurement: degrees
Measurement: degrees
1. If a right angle is divided into two smaller angles, and one angle measures 35 degrees, what is the measure of the other angle?
45 degrees
55 degrees
65 degrees
90 degrees
2. What is the sum of angles in a straight line?
90 degrees
180 degrees
270 degrees
360 degrees
1. An angle measures 120 degrees. It is divided into two smaller angles. If one smaller angle is 70 degrees, what is the measure of the other smaller angle?
2. Draw an obtuse angle and label its vertex and arms.
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