A trapezoid is a quadrilateral with two parallel sides.


Real World Examples
http://www.clipart.com_Filename:c61074.thb http://www.clipart.com_Filename:020827_1653_0033_l__p.thb

This applet has a minor bug. If you use it long enough at some point the quadrilateral will cease to be a trapezoid.
It is the only "bug" in the Grades One to Six portion of the glossary that I am leaving till a later date.
I will fix it when time is less of an issue (and no deadlines are looming).
Image only

Instructions text as in global.js

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