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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1MCIXLK-CIW8

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1.Classify a 30° angle.
2.Reflect (18, 8) across the vertical line x = 20.
3.Classify a 60° angle.
4.Reflect (15, 6) across the vertical line x = 22.
5.Classify a 170° angle.
6.Reflect (0, 4) across the vertical line x = 6.
7.Classify a 130° angle.
8.Reflect (6, 14) across the vertical line x = 9.
9.Reflect (9, 5) across the vertical line x = 16.
10.Classify a 110° angle.

Answers and teaching notes

Use the answers to check the work after the learner finishes. For writing prompts, the guide describes what a strong response should include.

Show answers for version 8
  1. Classify a 30° angle.Acute
  2. Reflect (18, 8) across the vertical line x = 20.(22, 8)
  3. Classify a 60° angle.Acute
  4. Reflect (15, 6) across the vertical line x = 22.(29, 6)
  5. Classify a 170° angle.Obtuse
  6. Reflect (0, 4) across the vertical line x = 6.(12, 4)
  7. Classify a 130° angle.Obtuse
  8. Reflect (6, 14) across the vertical line x = 9.(12, 14)
  9. Reflect (9, 5) across the vertical line x = 16.(23, 5)
  10. Classify a 110° angle.Obtuse

Worked example

Sketch and label the quantities before selecting a measurement or geometry operation.

Common mistake

Using the right numbers with the wrong unit or formula.

Helpful hint

Write the unit beside every measurement.