Lines, shapes and coordinates GM1.2 Core Plenary You will need a piece of triangular dotty paper. Draw and label examples of seven or eight different types of quadrilateral. Every vertex must be at a dot. Try to draw at least two examples of each type. Preamble A fairly basic activity to revise the properties and naming of quadrilaterals – with an opportunity to check on pupils’ spelling of the names. Pupils may need reminding to use the dots as vertices. An extension activity would be to find the values of the internal angles of the quadrilaterals using the properties of the triangular dotty paper. Pupils could be asked to justify the naming of some quadrilaterals in order to practise using mathematical language associated with their properties. Possible content Identifying quadrilaterals by their properties. Resources Triangular dotty paper. Solution/Notes Pupils’ own labelled figures. Original Material © Cambridge University Press 2009 Original Material © Cambridge University Press 2009