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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1A98DBN-CIW8

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1.Classify a 170° angle.
2.Reflect (12, 12) across the vertical line x = 19.
3.Classify a 60° angle.
4.Reflect (16, 4) across the vertical line x = 18.
5.Classify a 150° angle.
6.Reflect (13, 1) across the vertical line x = 16.
7.Classify a 100° angle.
8.Reflect (6, 15) across the vertical line x = 10.
9.Classify a 70° angle.
10.Reflect (6, 13) across the vertical line x = 13.

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 12
  1. Classify a 170° angle.Obtuse
  2. Reflect (12, 12) across the vertical line x = 19.(26, 12)
  3. Classify a 60° angle.Acute
  4. Reflect (16, 4) across the vertical line x = 18.(20, 4)
  5. Classify a 150° angle.Obtuse
  6. Reflect (13, 1) across the vertical line x = 16.(19, 1)
  7. Classify a 100° angle.Obtuse
  8. Reflect (6, 15) across the vertical line x = 10.(14, 15)
  9. Classify a 70° angle.Acute
  10. Reflect (6, 13) across the vertical line x = 13.(20, 13)

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.