Worksheet directions

Grade 4 • Warm-up • Two identical copies. Cut along the dashed line.

Sample questions

1. Classify the triangle by its angles. Identify whether it has a right angle, an obtuse angle, or only acute angles. Answer: ___
2. Classify this rotated triangle by its angles. Mark the angle that decides your classification, or explain why all three are acute. Answer: ___

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

Common Core connections

Source labels: 4.G.A.2. Review the learning goals below to check the fit for your class.

• 4.G.A.2 — Classify two-dimensional figures

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.