4.8. ASA and AAS Triangle Congruence http://www.ck12.org
4.8 ASA and AAS Triangle Congruence
Here you’ll learn how to prove that two triangles are congruent given only information about two pairs of angles and
a pair of sides.
What if your parents changed their minds at the last second about their kitchen layout? Now, they have decided they
to have the distance between the sink and the fridge be 3 ft, the angle at the sink 71◦and the angle at the fridge is
50 ◦. You used your protractor to measure the angle at the stove and sink at your neighbor’s house. Are the kitchen
triangles congruent now? After completing this Concept, you’ll be able to use a congruence shortcut to help you
answer this question.
Watch This
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Click image to the left for more content.CK-12 Foundation: Chapter4ASAandAASTriangleCongruenceA
Watch the portions of the following two videos that deal with ASA and AAS triangle congruence.
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Click image to the left for more content.James Sousa:Introduction toCongruent Triangles
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Click image to the left for more content.James Sousa:DeterminingIf Two Triangles are Congruent
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Click image to the left for more content.