8.G.A.2
Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them.
Cluster 8.G.AUnderstand congruence and similarity using physical models, transparencies, or geometry software.
Where this sits in the school year
Our Grade 8 Math scope and sequence teaches 8.G.A.2 in Unit 1: Transformations & Congruence, weeks 1–3.
Establish rigid motions and what they preserve, then define congruence as a sequence of those motions. See the full pacing guide →
Builds on
Suggested prerequisites. This sequencing is our editorial guidance, not part of the Common Core.
Teaching Kits for this standard
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