2.A: Proving Triangle Congruence
- Page ID
- 31441
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Overview
The purpose of this lesson is to identify when we can claim two triangles are congruent.
This lesson will address the following CCRS Standard(s) for Geometry:
- 8.G.2: Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them
- G.SRT.5: Use congruence and similarity criteria for triangles to solve problems and to prove relationships in geometric figures
Directions
- Take notes while watching videos below
- Go to http://wamap.org and log into our course to complete assignment 2.A with 80% or better.
Do
Complete assignment 2.A with 80% or better at http://wamap.org
Summary
In this lesson we have learned:
- To identify congruent triangles we need to know three parts are congruent: SSS, SAS, ASA, or AAS
- The following combinations do not necessarily indicate congruence: ASS and AAA