An angle is a fraction of a circle measured in degrees. A whole circle is 360 degrees. There are four types of basic angles students in elementary school study in geometry. They are as follows.
Acute: an angle whose measure is less than 90 degrees.
Right: an angle whose measure is exactly 90 degrees.
Obtuse: an angle whose measure is bigger than 90 degrees but less than 180 degrees.
Straight: an angle whose measure is 180 degrees.
Classify angles
Before kids learn to measure angles with a protractor, they learn to classify the angles. We have created a set of grade 5 worksheets to help your child learn to classify the angles.
Classify and measure angles
We’ve also created worksheets for classifying and measuring angles with a protractor.
If you are looking for other grade 5 geometry worksheets, we’ve created this page of topics covered in this grade.
