The K5 Learning Blog urges parents to be pro-active in helping their children reach their full academic potential.


K5 Learning
provides an online reading and math program for kindergarten to grade 5 students.

K5 Learning Video Tour

Learn More about K5's online learning program.

Different Types of Angles

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.

acute angle
 
Right: an angle whose measure is exactly 90 degrees.

right angles
 
Obtuse: an angle whose measure is bigger than 90 degrees but less than 180 degrees.

obtuse angle
 
Straight: an angle whose measure is 180 degrees.

straight angles

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.

classifying angles worksheet
Classify and measure angles

We’ve also created worksheets for classifying and measuring angles with a protractor.

measure and classify angles worksheet
 
If you are looking for other grade 5 geometry worksheets, we’ve created this page of topics covered in this grade.