Louisiana Department of Education
Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: The Concept of Congruence
A guide to support parents as they work with their students in the concept of congruence.
Other
Nearpod: Congruent Triangles & Similarity
In this lesson on congruent triangles, students explore how to use postulates to identify if triangles are congruent by SSS, SAS, ASA, and AAS.
Wolfram Research
Wolfram Math World: Congruent
This MathWorld site defines both meanings of the term congruent, also gives the commonly used notation.
Math Is Fun
Math Is Fun: Definition of Congruent
Definition of congruent. Choose the "here's more" link to see examples of a rotation, reflection and translation.
K-5 Math Teaching Resources
K 5 Math Teaching Resources: Congruent Eighths [Pdf]
This activity could be used to introduce the concept of congruence. You will need the following materials: geoboards, rubber bands, and geoboard recording paper.
Sophia Learning
Sophia: Cpctc: Lesson 2
This lesson will demonstrate the use of CPCTC in triangle congruencey proofs. It is 2 of 4 in the series titled "CPCTC."
Sophia Learning
Sophia: Reflexive Property of Congruence and Equality: Lesson 6
This lesson will introduce the reflexive property of congruence, and the reflexive property of equality. It is 6 of 6 in the series titled "Reflexive Property of Congruence and Equality."
ClassFlow
Class Flow: Compass Constructions
[Free Registration/Login Required] This flipchart provides the basic step-by-step guidance for making congruent constructions using a compass and a ruler.
ClassFlow
Class Flow: Congruency
[Free Registration/Login Required] Here are many variations of congruent triangles displayed for students to test their knowledge.
ClassFlow
Class Flow: Congruent Triangles, Bi Conditional Statements
[Free Registration/Login Required] This flipchart contains an introduction to congruent triangles. It also introduces logic (p->q) including bi-conditional statements. A challenge is presented to students.
Math Is Fun
Math Is Fun: Congruent
The resource investigates congruent shapes. Examples and definitions are included.
National Council of Teachers of Mathematics
The Math Forum: Similarity and Congruence
This site from Dr. Math at the Math Forum provides a collection of problems and exercises that require knowledge of the relations between similar or congruent shapes. Solutions are provided.