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the definition of ellipse
Author:
丁明智
GeoGebra
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第八周作业3
斐波那契螺旋弧线（表格法-可动态调节）
常见四边形是否是双心四边形
异形操场
第八周作业1
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七巧板綜合
圓錐
ggxfs 凹面鏡的反射成像
exp(z)
轨迹阴影示意图
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Vectors
Solids or 3D Shapes
Cube
Coordinates
Cosine