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Measurement & Geometry

Grade 4 · Building confidence · 10 questions · Version PG-1OSW3WA-FMWM

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1.Classify a 110° angle.
2.Reflect (10, 14) across the vertical line x = 14.
3.Reflect (5, 3) across the vertical line x = 11.
4.Classify a 70° angle.
5.Reflect (10, 13) across the vertical line x = 17.
6.Classify a 100° angle.
7.Reflect (0, 8) across the vertical line x = 6.
8.Classify a 30° angle.
9.Reflect (11, 12) across the vertical line x = 14.
10.Classify a 130° 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 11
  1. Classify a 110° angle.Obtuse
  2. Reflect (10, 14) across the vertical line x = 14.(18, 14)
  3. Reflect (5, 3) across the vertical line x = 11.(17, 3)
  4. Classify a 70° angle.Acute
  5. Reflect (10, 13) across the vertical line x = 17.(24, 13)
  6. Classify a 100° angle.Obtuse
  7. Reflect (0, 8) across the vertical line x = 6.(12, 8)
  8. Classify a 30° angle.Acute
  9. Reflect (11, 12) across the vertical line x = 14.(17, 12)
  10. Classify a 130° angle.Obtuse

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.