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Measurement & Geometry

Grade 4 · Building confidence · 10 questions · Version PG-1AMEL86-FMWM

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1.Classify a 130° angle.
2.Reflect (14, 13) across the vertical line x = 17.
3.Classify a 140° angle.
4.Reflect (4, 4) across the vertical line x = 7.
5.Reflect (17, 8) across the vertical line x = 19.
6.Reflect (4, 7) across the vertical line x = 10.
7.Classify a 40° angle.
8.Reflect (7, 9) across the vertical line x = 10.
9.Classify a 170° angle.
10.Reflect (0, 3) across the vertical line x = 2.

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 6
  1. Classify a 130° angle.Obtuse
  2. Reflect (14, 13) across the vertical line x = 17.(20, 13)
  3. Classify a 140° angle.Obtuse
  4. Reflect (4, 4) across the vertical line x = 7.(10, 4)
  5. Reflect (17, 8) across the vertical line x = 19.(21, 8)
  6. Reflect (4, 7) across the vertical line x = 10.(16, 7)
  7. Classify a 40° angle.Acute
  8. Reflect (7, 9) across the vertical line x = 10.(13, 9)
  9. Classify a 170° angle.Obtuse
  10. Reflect (0, 3) across the vertical line x = 2.(4, 3)

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.