Classifying Quadrilaterals by Four Sides
Classifying quadrilaterals by the four sides and whether or not they have right angles or parallel sides.
Anthony Or, Education Bureau, Hong Kong.
orchiming@gmail.com
(繁體中文版:http://www.geogebratube.org/material/show/id/578)
- Target Group (Age)
- 6 – 10
- Language
- English (United Kingdom)
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