Dr. J's Maths.com
Where the techniques of Maths
are explained in simple terms.

Geometry - the Quadrilateral Family - main page.


A quadrilateral is the general term used to describe a 2-dimensional shape with four sides. The figure must be closed in that the lines must be continuous.


There are many variations in the shapes that can be traced out and we will now review some of these variations.

The quadrilateral family.  
The properties of the family members.  
Geometry proof questions. Quadrilaterals - Test Yourself 1.
Trapezium. General introduction to the trapezium.
  Trapezium - Test Yourself 1.