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4.G.2 – Classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines, or the presence or absence of angles of a specified size. Recognize right triangles as a category, and identify right triangles.
Samples: Angles in the environment. Comparing angles to a right angle. Parallel and perpendicular lines in shapes.
5.G.3 – Understand that attributes belonging to a category of two-dimensional figures also belong to all subcategories of that category. For example, all rectangles have four right angles and squares are rectangles, so all squares have four right angles.
Samples: Attributes of two dimensional shapes. Grouping two dimensional shapes based on their attributes.
5.G.4 – Classify two-dimensional figures in a hierarchy based on properties.
Samples: Combining or splitting 2D shapes. Constructing 2D shapes. Attributes of two dimensional shapes.
ACMMG141 – 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
Samples: Angles within a circle. Identifying angles at intersecting lines. Naming angles within shapes.
7.GM.4 – Sort two- and three-dimensional shapes into classes, defining properties and justifying the decisions made
Samples: Measuring angles using a protractor: Activity 1. Estimating the size of angles. Angles within a circle.
KS2.Y4.G.PS – Geometry - properties of shapes
Pupils should be taught to:
KS1.Y4.G.PS.1 – Compare and classify geometric shapes, including quadrilaterals and triangles, based on their properties and sizes
Samples: Studying the Names of 2D Shapes. Combining or splitting 2D shapes. Attributes of two dimensional shapes.