AC9M3M05 • Year 3 Maths

Angles as Measures of Turn (AC9M3M05)

identify angles as measures of turn and compare angles with right angles in everyday situations

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Unit focus

  • An angle measures the amount of turn between two arms. A right angle is a useful benchmark for comparing smaller and larger turns.
  • Use this routine: Find vertex → Trace arms → Imagine turn → Compare with right angle → Classify.
  • Watch for longer arms mean bigger angle: Angle size depends on turn, not arm length.
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