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# Properties of quadrilaterals

There are several aspects to the investigation of the properties of quadrilaterals.

- Each of the special quadrilaterals possesses a unique set of properties. Students can 'discover' these if they are given good activities and useful tools. They then need to retain the understanding of the properties for future use.
- The descriptions of properties are loaded with geometrical terms and it is important that students understand what these mean. Further elaboration can be found in
.__The Language of Geometry__

At this stage of their mathematical development, most students view squares and rectangles as different shapes, rather than seeing that a square is just a special rectangle (and a special rhombus).

## Property match-up

This is a classroom activity in which students are required to match quadrilateral properties expressed in words with the corresponding properties indicated on a diagram.

## Quadrilateral property quiz

In this classroom activity, students are given physical examples of quadrilaterals that they can fold and measure. They then manipulate digital versions of the same quadrilaterals.

## Quadrilateral flowchart puzzle

This is a challenging classroom activity in which students are required to represent the hierarchy of the special quadrilaterals in a flowchart diagram.