Lesson: Congruence of Triangles: SSS, SAS, and RHS Mathematics • 8th Grade

In this lesson, we will learn how to prove that two triangles are congruent using either the side-side-side (SSS), the side-angle-side (SAS), or the right angle-hypotenuse-side (RHS) criterion.

Lesson Video

Sample Question Videos

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Lesson Worksheet

Q1:

Determine whether the triangles in the given figure are congruent, and, if they are, state which of the congruence criteria proves this.

Q2:

Two triangles share two sides and a contained angle. Would the two triangles be congruent?

Q3:

Determine whether the triangles in the given figure are congruent by applying SSS, SAS, or ASA. If they are congruent, state which of the congruence criteria proves this.