Worksheet directions

Grade 1 • Warm-up • Two identical copies. Cut along the dashed line.

Sample questions

1. Why is a circle not a polygon? Explain: ___
2. How can a rectangle be split into two triangles? Answer: ___
3. Which shape has four square corners: triangle or rectangle? Shape: ___

See the preview for diagrams, answer spaces, and the complete layout.

Common Core connections

Source labels: 1.G.A.1–2. Review the learning goals below to check the fit for your class.

• 1.G.A.1 — Distinguish defining attributes of shapes
• 1.G.A.2 — Compose 2-D and 3-D shapes

Bring it into your lesson

Open this worksheet in Sparkclass to copy it to your Files. Check the resulting layout before sharing it with students.