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Author:
Natalie Chan
GeoGebra
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第八周作业3
双心四边形
龙形曲线-分形龙2
平行線的判定
异形操场
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量度的誤差 Errors in Measurement
How to draw a heptagon with ruler andcomp…
三角四星
旁心
旋轉體：Washer Method的副本
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Statistical Characteristics
General Quadrilateral
Similar Triangles
Tangent Function
Pyramid