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Year 5 Maths — Angles and the protractor

Name an angle as acute, right, obtuse or straight, and measure one with a protractor.

Name: ________________________

  1. 1.How many right angles make a full turn?

  2. 2.Three angles are drawn below. Tap the obtuse one.

    Write the number of the part.

    123

  3. 3.How many degrees are there in a half turn?

  4. 4.An angle is a third of a half turn. How many degrees is it?

  5. 5.An angle measures 45°. What kind of angle is it?

    • a) Straight
    • b) Acute
    • c) Obtuse
    • d) Right

  6. 6.How many degrees are there in a right angle?

  7. 7.Sort each angle by its name.

    Groups: Acute · Obtuse

    • 175°
    • 89°
    • 95°
    • 150°
    • 12°
    • 30°

  8. 8.An angle measures 130°. What kind of angle is it?

    • a) Obtuse
    • b) Right
    • c) Straight
    • d) Acute

Answer key — Year 5 Maths — Angles and the protractor

  1. 1. 4
  2. 2. 3 — Angle C
  3. 3. 180
  4. 4. 60
  5. 5. b) Acute
  6. 6. 90
  7. 7. 30° → Acute; 95° → Obtuse; 89° → Acute; 150° → Obtuse; 12° → Acute; 175° → Obtuse
  8. 8. a) Obtuse