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Measurement & Geometry

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

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1.Classify a 150° angle.
2.Reflect (16, 12) across the vertical line x = 21.
3.Classify a 70° angle.
4.Reflect (18, 4) across the vertical line x = 24.
5.Classify a 80° angle.
6.Reflect (9, 8) across the vertical line x = 16.
7.Classify a 40° angle.
8.Reflect (10, 11) across the vertical line x = 16.
9.Reflect (16, 15) across the vertical line x = 20.
10.Classify a 160° 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 2
  1. Classify a 150° angle.Obtuse
  2. Reflect (16, 12) across the vertical line x = 21.(26, 12)
  3. Classify a 70° angle.Acute
  4. Reflect (18, 4) across the vertical line x = 24.(30, 4)
  5. Classify a 80° angle.Acute
  6. Reflect (9, 8) across the vertical line x = 16.(23, 8)
  7. Classify a 40° angle.Acute
  8. Reflect (10, 11) across the vertical line x = 16.(22, 11)
  9. Reflect (16, 15) across the vertical line x = 20.(24, 15)
  10. Classify a 160° 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.