Quadrilaterals

There are 64 NRICH Mathematical resources connected to Quadrilaterals
Bracelets
problem

Bracelets

Age
7 to 11
Challenge level
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Investigate the different shaped bracelets you could make from 18 different spherical beads. How do they compare if you use 24 beads?
The Cyclic Quadrilateral
article

The Cyclic Quadrilateral

This gives a short summary of the properties and theorems of cyclic quadrilaterals and links to some practical examples to be found elsewhere on the site.
Folding Flowers 1
problem

Folding Flowers 1

Age
7 to 11
Challenge level
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Can you visualise what shape this piece of paper will make when it is folded?