Grade 8 · Geometry

8.G.A.4

Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity 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.4 in Unit 2: Dilations, Similarity & Angles, weeks 4–6.

Add dilations to build similarity, and establish the angle facts that make the angle-angle criterion work. See the full pacing guide →

Builds on

Suggested prerequisites. This sequencing is our editorial guidance, not part of the Common Core.

8.G.A.3

Teaching Kits for this standard

🏗️ Scale Model Showroom65 min · Scale design project

Browse the library filtered to 8.G.A.4 →