Informal Proof of AA Criterion for Similarity

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Objectives

Students know an informal proof of the Angle-Angle (AA) criterion for similar triangles.
Students present informal arguments as to whether or not triangles are similar based on Angle - Angle criterion.

Prior Knowledge

DilationFundamental Theoram of Similarity

45 mins 8.G.A.5 8.G.A.3 8.G.A.4

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