Grade 8 · Geometry

8.G.B.7

Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems in two and three dimensions.

Cluster 8.G.BUnderstand and apply the Pythagorean Theorem.

Where this sits in the school year

Our Grade 8 Math scope and sequence teaches 8.G.B.7 in Unit 9: Pythagorean Theorem, weeks 25–27.

Prove the theorem and its converse, then apply it to lengths in two and three dimensions and to coordinate distance. See the full pacing guide →

Builds on

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

8.G.B.6

Teaching Kits for this standard

🚑 Rescue Route Challenge60 min · Applied geometry 🪜 The Ladder Rule55 min · Guided practice + safety checks

Browse the library filtered to 8.G.B.7 →