Standard
- CCSS.Math.Content.4.G
- Geometry
- CCSS.Math.Content.4.G.A
- Draw and identify lines and angles, and classify shapes by properties of their lines and angles.
- CCSS.Math.Content.4.G.A.2
- Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.