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Measurement & Geometry

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

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1.Classify a 30° angle.
2.Reflect (19, 8) across the vertical line x = 24.
3.Classify a 90° angle.
4.Reflect (8, 4) across the vertical line x = 14.
5.Classify a 100° angle.
6.Reflect (5, 6) across the vertical line x = 8.
7.Classify a 170° angle.
8.Reflect (8, 8) across the vertical line x = 15.
9.Classify a 80° angle.
10.Reflect (17, 15) across the vertical line x = 20.

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 9
  1. Classify a 30° angle.Acute
  2. Reflect (19, 8) across the vertical line x = 24.(29, 8)
  3. Classify a 90° angle.Right
  4. Reflect (8, 4) across the vertical line x = 14.(20, 4)
  5. Classify a 100° angle.Obtuse
  6. Reflect (5, 6) across the vertical line x = 8.(11, 6)
  7. Classify a 170° angle.Obtuse
  8. Reflect (8, 8) across the vertical line x = 15.(22, 8)
  9. Classify a 80° angle.Acute
  10. Reflect (17, 15) across the vertical line x = 20.(23, 15)

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.