(2014年7月更新)
透過四邊形的邊長及有否直角或平行邊等特性來將四邊形分類。
柯志明
香港 GeoGebra 學院
orchiming@gmail.com
(English version: http://www.geogebratube.org/material/show/id/470)
- Target Group (Age)
- 6 – 10
- Language
- Chinese Traditional / 繁體中文
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