Standard
- CCSS.Math.Content.1.G
- Geometry
- CCSS.Math.Content.1.G.A
- Reason with shapes and their attributes.
- CCSS.Math.Content.1.G.A.1
- Distinguish between defining attributes (e.g., triangles are closed and three-sided) versus non-defining attributes (e.g., color, orientation, overall size) ; build and draw shapes to possess defining attributes.