Introduction
Using Direct Proofs to Prove Triangles Similar

a student writing notes 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

 

Warm-Up

a lightbulb resting on a chalk board with six thought bubbles drawn around it

warm-up icon 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?