4.2 Polygons

Recognise and name parallelograms, rectangles, squares, rhombuses, trapeziums, kites, pentagons, hexagons and octagons.

understand and use the term ‘quadrilateral’ and the angle sum property of quadrilaterals The four angles of a quadrilateral are 90°, (x + 15)°, (x +25)° and (x + 35)° Find the value of x

understand and use the properties of the parallelogram, rectangle, square, rhombus, trapezium and kite

understand the term ‘regular polygon’ and calculate interior and exterior angles of regular polygons

understand and use the angle sum of polygons For a polygon with n sides, the sum of the interior angles is (2n – 4) right angles

understand congruence as meaning the same shape and size

Understand that polygons with the same shape and size are congruent.