Chapter 4

Congruent Triangles

Lessons

Where's the math?

Have you ever tried to build a bridge out of spaghetti?

The triangles in this bridge are congruent--they have the same size and shape.

In this chapter, you'll learn how to prove that two triangles are congruent.

Domains

Congruence

Mathematical Practice: Construct Viable Arguments

Modeling with Geometry

Big Ideas

Visualization

Essential Question: How do you identify corresponding parts of congruent triangles?

Reasoning and Proof

Essential Question: How do you show that two triangles are congruent?

Reasoning and Proof

Essential Question: How can you tell whether a triangle is isosceles or equilateral?

Remind Stream

Wall of Wisdom