Angles
Outcomes
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MA3-16MG
Measures and constructs angles, and applies angle relationships to find unknown angles
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Angles 1
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Construct angles using a protractor (ACMMG112)
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Identify that a right angle is 90 degrees, a straight angle is 180 degrees and an angle of revolution is 360 degrees
Examples
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Identify and describe angle size in degrees for each of the classifications acute, obtuse and reflex
Examples
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Compare the sizes of two or more angles in degrees, eg compare angles in different two-dimensional shapes
Examples
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Identify that a right angle is 90 degrees, a straight angle is 180 degrees and an angle of revolution is 360 degrees
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Construct angles using a protractor (ACMMG112)
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Angles 2
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Investigate, with and without the use of digital technologies, angles on a straight line, angles at a point, and vertically opposite angles; use the results to find unknown angles (ACMMG141)
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Identify and name angle types formed by the intersection of straight lines, including right angles, 'angles on a straight line', 'angles at a point' that form an angle of revolution, and 'vertically opposite angles'
Examples
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Investigate, with and without the use of digital technologies, angles at a point and establish that they form an angle of revolution and add to 360 degrees
Examples
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Identify and name angle types formed by the intersection of straight lines, including right angles, 'angles on a straight line', 'angles at a point' that form an angle of revolution, and 'vertically opposite angles'
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Investigate, with and without the use of digital technologies, angles on a straight line, angles at a point, and vertically opposite angles; use the results to find unknown angles (ACMMG141)
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Angles 1