GEOM 2 | Lesson 2 | Watch (Classifying Triangles)

Classifying Triangles

  1. Draw a triangle consisting of side lengths of the 3, 4, and 5 inches.  “How would you classify the largest angle in this triangle?”
  2. How can you verify if a triangle has a right angle, and is therefore, a right triangle?  (Note: One way to verify that a triangle has a right angle is to use a protractor.)
  3. How could you test to see if a triangle is acute or obtuse?

Watch the following video to see how to use the side lengths to classify triangles by angle.

Using the Pythagorean Theorem to classify triangles.

Go to Practice

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