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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1B376EK-CIW8

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1.Classify a 30° angle.
2.Reflect (17, 15) across the vertical line x = 24.
3.Classify a 100° angle.
4.Reflect (7, 11) across the vertical line x = 11.
5.Classify a 60° angle.
6.Reflect (6, 13) across the vertical line x = 10.
7.Classify a 170° angle.
8.Reflect (7, 9) across the vertical line x = 13.
9.Classify a 130° angle.
10.Reflect (10, 10) across the vertical line x = 17.

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 17
  1. Classify a 30° angle.Acute
  2. Reflect (17, 15) across the vertical line x = 24.(31, 15)
  3. Classify a 100° angle.Obtuse
  4. Reflect (7, 11) across the vertical line x = 11.(15, 11)
  5. Classify a 60° angle.Acute
  6. Reflect (6, 13) across the vertical line x = 10.(14, 13)
  7. Classify a 170° angle.Obtuse
  8. Reflect (7, 9) across the vertical line x = 13.(19, 9)
  9. Classify a 130° angle.Obtuse
  10. Reflect (10, 10) across the vertical line x = 17.(24, 10)

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.