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題 5的副本
Author:
钟秀群
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
兩組對邊相等的四邊形
第八周作业
画直线等分三角形的面积
判斷球體
三位數除以一位數（一）
Discover Resources
立體圖形的反射對稱
柱體高度與體積
P53_3c
circle: line from centre
我的第一个GGB绘本
Discover Topics
Bar Chart or Bar Graph
Scalene Triangles
Tangent Function
Means
Variance