4.7. SAS Triangle Congruence http://www.ck12.org
4.7 SAS Triangle Congruence
Here you’ll learn how to prove that two triangles are congruent given only information about two pairs of sides and
included angles.
What if you were given two triangles and provided with only two of their side lengths and the measure of the angle
between those two sides? How could you determine if the two triangles were congruent? After completing this
Concept, you’ll be able to use the Side-Angle-Side (SAS) shortcut to prove triangles are congruent.
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CK-12 Foundation: Chapter4SASTriangleCongruenceA
Watch the portions of the following two videos that deal with SAS triangle congruence.
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James Sousa:Introduction toCongruent Triangles
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James Sousa:DeterminingIf Two Triangles are Congruent
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James Sousa:Example1: Prove Two Triangles are Congruent