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BkD_act15_04c
Author:
Luk Sir
GeoGebra
New Resources
第八周作业
兩位數除以一位數（二）
GeoGebra笔记功能体验课件
兩組對邊相等的四邊形
判斷球體
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中點軌跡(動點在兩圓上)
ghseh 二次函數上下y值差
圓內接四邊形--預習工作紙
梯形
中心对称与轴对称图形.许兴华数学
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Perimeter
Parallelogram
Tree Diagrams
Terms
Geometric Transformations