http://www.ck12.org Chapter 4. Triangles and Congruence
4.6 SSS Triangle Congruence
Here you’ll learn how to prove that two triangles are congruent given only information about the side lengths of the
triangles.
What if your parents were remodeling their kitchen so that measurements between the sink, refrigerator, and oven
were as close to an equilateral triangle as possible? The measurements are in the picture at the left, below. Your
neighbor’s kitchen has the measurements on the right, below. Are the two triangles congruent? After completing
this Concept, you’ll be able to determine whether or not two triangles are congruent given only their side lengths.
Watch This
MEDIA
Click image to the left for more content.CK-12 Foundation: Chapter4SSSTriangleCongruenceA
Watch the portions of the following two videos that deal with SSS triangle congruence.
MEDIA
Click image to the left for more content.James Sousa:Introduction toCongruent Triangles
MEDIA
Click image to the left for more content.James Sousa:DeterminingIf Two Triangles are Congruent
Guidance
Consider the question: If I have three lengths, 3 in, 4 in, and 5 in, can I construct more than one triangle with these
measurements? In other words, can I construct two different triangles with these same three lengths?