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AC9M4M04

estimate and compare angles using angle names including acute, obtuse, straight angle, reflex and revolution, and recognise their relationship to a right angle

Elaborations

  • AC9M4M04_E1classifying the interior angles of a range of shapes, using examples of angles to identify acute, obtuse, right and reflex angles
  • AC9M4M04_E2identifying angles within the environment and estimating whether they are acute, obtuse right or reflex
  • AC9M4M04_E3creating a right-angle template using cardboard or a double-folded piece of paper and using it to compare angles in the environment, commenting on whether they are smaller than or greater than a right angle
  • AC9M4M04_E4using different measuring tools such as a spirit level or set squares to determine whether lines or objects are straight, square or perpendicular (at right angles)

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Practice Questions — Measurement
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AC9M4M04 – estimate and compare angles using angle names including acute, obtuse, straight angle, reflex and revolution, and recognise their relationship to a right angle | LessonForge