Angles
Outcomes

MA316MG
Measures and constructs angles, and applies angle relationships to find unknown angles

Angles 1

Construct angles using a protractor (ACMMG112)

Identify that a right angle is 90 degrees, a straight angle is 180 degrees and an angle of revolution is 360 degrees
Examples

Identify and describe angle size in degrees for each of the classifications acute, obtuse and reflex
Examples

Compare the sizes of two or more angles in degrees, eg compare angles in different twodimensional shapes
Examples

Identify that a right angle is 90 degrees, a straight angle is 180 degrees and an angle of revolution is 360 degrees

Construct angles using a protractor (ACMMG112)

Angles 2

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)

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

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

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'

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)

Angles 1