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Measurement & Geometry

Grade 4 · On-level practice · 10 questions · Version PG-19Z8RMO-CIW8

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1.Classify a 50° angle.
2.Reflect (11, 3) across the vertical line x = 14.
3.Classify a 110° angle.
4.Reflect (0, 13) across the vertical line x = 4.
5.Classify a 100° angle.
6.Reflect (18, 12) across the vertical line x = 20.
7.Classify a 120° angle.
8.Reflect (5, 6) across the vertical line x = 9.
9.Reflect (1, 13) across the vertical line x = 6.
10.Classify a 20° 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 13
  1. Classify a 50° angle.Acute
  2. Reflect (11, 3) across the vertical line x = 14.(17, 3)
  3. Classify a 110° angle.Obtuse
  4. Reflect (0, 13) across the vertical line x = 4.(8, 13)
  5. Classify a 100° angle.Obtuse
  6. Reflect (18, 12) across the vertical line x = 20.(22, 12)
  7. Classify a 120° angle.Obtuse
  8. Reflect (5, 6) across the vertical line x = 9.(13, 6)
  9. Reflect (1, 13) across the vertical line x = 6.(11, 13)
  10. Classify a 20° 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.