# Mathematics / Year 6 / Measurement and Geometry / Geometric reasoning

Curriculum content descriptions

Investigate, with and without digital technologies, angles on a straight line, angles at a point and vertically opposite angles. Use results to find unknown angles (ACMMG141)

Elaborations
• identifying the size of a right angle as 90° and defining acute, obtuse, straight and reflex angles
• measuring, estimating and comparing angles in degrees and classifying angles according to their sizes
• investigating the use of rotation and symmetry in the diagrammatic representations of kinship relationships of Central and Western Desert people
• recognising and using the two alternate conventions for naming angles
General capabilities
• Numeracy Numeracy
• Critical and creative thinking Critical and creative thinking
• ICT capability Information and Communication Technology (ICT) capability
ScOT terms

Co-interior angles,  Corresponding angles,  Vertically opposite angles

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