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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1LIK4IN-CIW8

1.

Classify a 20° angle.

2.

Reflect (6, 14) across the vertical line x = 9.

3.

Classify a 50° angle.

4.

Reflect (4, 12) across the vertical line x = 7.

5.

Classify a 60° angle.

6.

Reflect (15, 11) across the vertical line x = 22.

7.

Reflect (8, 2) across the vertical line x = 10.

8.

Classify a 10° angle.

9.

Reflect (20, 6) across the vertical line x = 22.

10.

Classify a 80° 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 5
  1. Classify a 20° angle.Acute
  2. Reflect (6, 14) across the vertical line x = 9.(12, 14)
  3. Classify a 50° angle.Acute
  4. Reflect (4, 12) across the vertical line x = 7.(10, 12)
  5. Classify a 60° angle.Acute
  6. Reflect (15, 11) across the vertical line x = 22.(29, 11)
  7. Reflect (8, 2) across the vertical line x = 10.(12, 2)
  8. Classify a 10° angle.Acute
  9. Reflect (20, 6) across the vertical line x = 22.(24, 6)
  10. Classify a 80° 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.