G.21
Represent transformations and compositions of transformations in the plane (coordinate and otherwise) using tools such as tracing paper and geometry software.
Khan Academy ResourcesProperties of translationsSequences of transformationsDefining transformationsCorresponding parts of congruent triangles are congruentTriangle congruence postulates/criteriaWhy SSA isn't a congruence postulate/criterionSequences of transformationsAngle congruence equivalent to having same measureSegment congruence equivalent to having same length

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