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Measurement & Geometry

Grade 4 · Building confidence · 10 questions · Version PG-1AWE6X5-FMWM

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1.Classify a 50° angle.
2.Reflect (3, 14) across the vertical line x = 5.
3.Classify a 170° angle.
4.Reflect (7, 5) across the vertical line x = 14.
5.Classify a 110° angle.
6.Reflect (5, 5) across the vertical line x = 11.
7.Reflect (1, 2) across the vertical line x = 8.
8.Classify a 60° angle.
9.Reflect (15, 3) across the vertical line x = 21.
10.Classify a 90° 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 7
  1. Classify a 50° angle.Acute
  2. Reflect (3, 14) across the vertical line x = 5.(7, 14)
  3. Classify a 170° angle.Obtuse
  4. Reflect (7, 5) across the vertical line x = 14.(21, 5)
  5. Classify a 110° angle.Obtuse
  6. Reflect (5, 5) across the vertical line x = 11.(17, 5)
  7. Reflect (1, 2) across the vertical line x = 8.(15, 2)
  8. Classify a 60° angle.Acute
  9. Reflect (15, 3) across the vertical line x = 21.(27, 3)
  10. Classify a 90° angle.Right

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.