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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1AT7KPL-CIW8

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1.Classify a 70° angle.
2.Reflect (1, 5) across the vertical line x = 6.
3.Reflect (18, 11) across the vertical line x = 20.
4.Classify a 40° angle.
5.Reflect (11, 5) across the vertical line x = 15.
6.Classify a 20° angle.
7.Reflect (5, 10) across the vertical line x = 8.
8.Reflect (5, 5) across the vertical line x = 11.
9.Classify a 140° angle.
10.Reflect (18, 8) across the vertical line x = 23.

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 10
  1. Classify a 70° angle.Acute
  2. Reflect (1, 5) across the vertical line x = 6.(11, 5)
  3. Reflect (18, 11) across the vertical line x = 20.(22, 11)
  4. Classify a 40° angle.Acute
  5. Reflect (11, 5) across the vertical line x = 15.(19, 5)
  6. Classify a 20° angle.Acute
  7. Reflect (5, 10) across the vertical line x = 8.(11, 10)
  8. Reflect (5, 5) across the vertical line x = 11.(17, 5)
  9. Classify a 140° angle.Obtuse
  10. Reflect (18, 8) across the vertical line x = 23.(28, 8)

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.