Knowledge of shape properties will include angles and symmetry of these polygons.Ĭhildren will describe shapes and identify them using their properties including symmetry and angles. They might be asked to sort shapes according to their properties using Venn diagrams and Carroll diagrams.Ĭhildren are taught to compare lengths and angles of polygons to decide if they are regular or irregular. The vocabulary ‘polygon’, ‘regular’ and ‘irregular’ will be used.Ĭhildren will be given a range of polygons to sort into regular and irregular this might be be completing practical tasks or using ICT.Ĭhildren will be taught to distinguish between regular and irregular polygons based on reasoning about equal sides and angles.Ĭhildren will be given shapes to sort and asked to explain why the polygon is regular using the properties of angles and sides.Īt the end of KS2 children begin to find unknown angles in regular polygons.Ĭhildren will be shown how to calculate unknown angles in polygons using their knowledge of angles and a given formula. They will be introduced to heptagons, nonagons and decagons. Illustrated definition of Nonagon: A 9-sided polygon (a flat shape with straight sides). What is the shape?Ĭhildren will extend their knowledge of polygons to include different types of triangles and quadrilaterals. They will describe shapes using the properties, for example: This shape has 3 corners and 3 sides. They will look at real-life examples of shapes as well as pictures.Ĭhildren will be taught to identify properties of shapes such as the number of sides and vertices (corners).Ĭhildren will count the number of sides and corners on the shape. Lune convex-concave region bounded by two curves (crescent moon shape) 3-D curved shapes. Names of 3D geometric shapes: Figure: Definition: Cube: A cube is a three-dimensional shape which has 6 faces, 8 vertices and 12 edges. Annulus region bounded by two concentric circles. Children are taught to name common 2D shapes including polygons such as squares, rectangles, triangles, pentagons, hexagons and octagons.Ĭhildren may learn the shapes through matching activities, going on a shape walk in the school grounds, flash-cards and games. Parabola mirror-symmetrical plane curve (u-shaped) the trajectory of terrestrial projectiles.
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