Welcome to our 2D shapes - Quadrilaterals and Triangles page! Here you will find worksheets and support resources to help you understand some of the special features of Quadrilaterals and triangles. These worksheets and resources will help you to understand the different types and properties of triangles, understand how to find the angles of a triangle and then the area of a triangle, and later know and use and apply Pythagoras' Theorem and understand the different types and properties of Quadrilaterals, how to identify and classify Quadrilaterals and the perimeter and area of a Quadrilateral.