This concept introduces students to the SAS Triangle Postulate and how to prove that two triangles are congruent given only information about two pairs of sides and included angles.
This video gives more detail about the mathematical principles presented in SAS Triangle Congruence.
This video shows how to work step-by-step through one or more of the examples in SAS Triangle Congruence.
Nine question quiz. Students must examine diagrams of triangles and the coordinates of triangles and determine if they are congruent using the SAS congruency theorem. Students must justify their reasoning. Students must also draw (on the coordinate plan) an example and non-example of triangles that can be proven congruent using the SAS theorem and then explain their reasoning.
A list of student-submitted discussion questions for SAS Triangle Congruence.
To activate prior knowledge, make personal connections, reflect on key concepts, encourage critical thinking, and assess student knowledge on the topic prior to reading using a Quickwrite.
To stress understanding of a concept by summarizing the main idea and applying that understanding to create visual aids and generate questions and comments using a Concept Matrix.
With this KWL Chart, reflect on your prior knowledge of a concept, come up with questions you’re curious about, and come up with answers from the reading.
Do a hands on activity to help conceptualize congruent triangles.
This study guide is an overview of triangle congruence: defining corresponding parts of congruent triangles, postulates and theorems for congruences (SSS, SAS, AAS, ASA), and postulates and theorems for congruences for special triangles.