If you're seeing this message, it means we're having trouble loading external resources for Khan Academy.
If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.
Now that we know what angles are, let's dig a bit deeper and classify them and understand their properties better. Acute, obtuse, right, adjacent--all are angles that we will be become familiar with.
We briefly discussed the types of angles in the last tutorial but we'll delve a little deeper into acute, obtuse, and right angles here.
Let's come up with an exact way to measure an angle using a protractor. We'll also learn about acute angles. Not to be confused with augly angles :)
Determine if an angle is acute, right, or obtuse. A protractor is provided.
Let's do a few example exercises in which you recognize and identify the type of given angle. This is a lot of fun!
Determine if angles in shapes and pictures are acute, right, or obtuse.
These 3 types of angles will often come up in your geometry studies. Let's make sure you know how to draw an acute, obtuse, and right angle.
Create an acute, right, or obtuse angle using a given vertex.
We're matching the visual angle with the corresponding angle measure. Great practice. See if you do it on your own before listening to Sal!
Estimate the size of angles when given a picture or a situation.