REVISION NOTES
IGCSE Edexcel Mathematics A
4.2 Polygons
4.2.1 Recognise and give the names of polygons
4.2.2 Understand and use the term ‘quadrilateral’ and the angle sum property of quadrilaterals
4.2.3 Understand and use the properties of the parallelogram, rectangle, square, rhombus, trapezium and kite
4.2.4 Understand the term ‘regular polygon’ and calculate interior and exterior angles of regular polygons
4.2.5 Understand and use the angle sum of polygons
For a polygon with n sides, the interior angles will sum to 180 x (n – 2)
4.2.6 Understand congruence as meaning the same shape and size
Two shapes are congruent if they are exactly the same shape and size.
4.2.7 Understand that two or more polygons with the same shape and size are said to be congruent to each other
