If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains ***.kastatic.org** and ***.kasandbox.org** are unblocked.

Main content
# Congruence of triangles

### Practice

### Learn

### About this unit

In this chapter, we will learn what congruence is and learn different criteria for proving the congruence of two triangles.