In certain situations, you will be asked to more formally demonstrate your understanding of similar triangles. These are called proofs, the most common of which is the two-column proof. In this topic, you will explore strategies for using the attributes of similar triangles and the postulates for similarity to prove that two triangles are indeed similar.

Essential Question

• How can you prove two triangles are similar by using a direct proof?

 

Warm-Up

Take a moment to reflect on your knowledge of triangles. How many different types of triangles do you know? Brainstorm a list of different ways you can describe triangles. Can you come up with at least 6 terms? How about 12?