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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1D14E9D-CIW8

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1.Classify a 30° angle.
2.Reflect (18, 6) across the vertical line x = 24.
3.Classify a 80° angle.
4.Reflect (7, 7) across the vertical line x = 9.
5.Classify a 60° angle.
6.Reflect (9, 1) across the vertical line x = 16.
7.Classify a 170° angle.
8.Reflect (8, 5) across the vertical line x = 15.
9.Reflect (17, 1) across the vertical line x = 22.
10.Classify a 70° 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 18
  1. Classify a 30° angle.Acute
  2. Reflect (18, 6) across the vertical line x = 24.(30, 6)
  3. Classify a 80° angle.Acute
  4. Reflect (7, 7) across the vertical line x = 9.(11, 7)
  5. Classify a 60° angle.Acute
  6. Reflect (9, 1) across the vertical line x = 16.(23, 1)
  7. Classify a 170° angle.Obtuse
  8. Reflect (8, 5) across the vertical line x = 15.(22, 5)
  9. Reflect (17, 1) across the vertical line x = 22.(27, 1)
  10. Classify a 70° angle.Acute

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.