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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-1M2JBWL-CIW8

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1.Classify a 100° angle.
2.Reflect (14, 14) across the vertical line x = 19.
3.Classify a 50° angle.
4.Reflect (18, 13) across the vertical line x = 21.
5.Classify a 70° angle.
6.Reflect (5, 1) across the vertical line x = 10.
7.Reflect (5, 3) across the vertical line x = 9.
8.Reflect (4, 8) across the vertical line x = 9.
9.Classify a 20° angle.
10.Reflect (3, 9) across the vertical line x = 10.

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 7
  1. Classify a 100° angle.Obtuse
  2. Reflect (14, 14) across the vertical line x = 19.(24, 14)
  3. Classify a 50° angle.Acute
  4. Reflect (18, 13) across the vertical line x = 21.(24, 13)
  5. Classify a 70° angle.Acute
  6. Reflect (5, 1) across the vertical line x = 10.(15, 1)
  7. Reflect (5, 3) across the vertical line x = 9.(13, 3)
  8. Reflect (4, 8) across the vertical line x = 9.(14, 8)
  9. Classify a 20° angle.Acute
  10. Reflect (3, 9) across the vertical line x = 10.(17, 9)

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.