Web-based Student Activities

Alphabet Geometry

Right Angles


Students should be able to:

  • identify and classify right angles.

Introduction to Right Angles: The Letter L

Let's begin by reviewing three types of angles:



3 angles

Which angle looks like the letter L?



right angle


You've got it...the right angle.


What can you learn by looking at the Letter L?

When you look at the letter L, you see a RIGHT ANGLE, or an angle with a measure of 90 degrees.



rays and vertex

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Use this mini-movie on your SMARTBoard




What can you by looking at the letter T?

The letter T also has right angles. Take a look at it below and see if you can find the angles. When you have it figured out, click the play button to see where they are.



w acute angles

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Use this mini-movie on your SMARTBoard





Angles on Your Interactive Whiteboard


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