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鉛筆的長度
Author:
GeoGebra Institute of Hong Kong
Topic:
Geometry
GeoGebra
New Resources
第八周作业
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
拼砌四邊形
三位數除以一位數（一）
Discover Resources
大樂透開獎機(由小號到大號)
平面和正方體截痕
二維
錯角---垂直平行綫
乘法表的自动练习的副本
Discover Topics
Kite
Coordinates
Area
Natural Numbers
Median Line