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GeoGebra
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GeoGebra
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红心
Author:
桂群成
GeoGebra
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异形操场
第八周作业
直線的斜率：水平變化 & 鉛垂變化
第八周作业3
比較五件物件的重量
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容積盒子
trigonometry1
Ruler
三角形的四心－五線－內外二圓的副本
线性规划&不等式&可行域&目标函数
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Linear Equations
Coordinates
Triangles
Surface
Complex Numbers