Unit 15 Section 4 : Quadrilaterals
There are many special types of quadrilaterals; the following table lists some of them and their properties.
It is important to remember that a particular shape can fit into more than one description. We always use the most specific name. For example, if I am looking at a rectangle, then I could also call it a trapezium (because it has two parallel sides) or a parallelogram (because it has two pairs of parallel sides and opposite sides equal). However, because it also has four right-angles it is called a rectangle because that is the most specific name we can give it.
NOTE: The diagonals of a quadrilateral are the lines connecting opposite corners.
(a) Which quadrilaterals always have four sides the same length?
ExercisesWork out the answers to the questions below and fill in the boxes. Click on the button to find out whether you have answered correctly. If you are right then will appear and you should move on to the next question. If appears then your answer is wrong. Click on to clear your original answer and have another go. If you can't work out the right answer then click on to see the answer.
Produced by A.J. Reynolds May 2008