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椭圆画法1--参数方程法
Author:
冯伟冀
GeoGebra
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第八周作业2
圓的基本性質
比較五件物件的重量
撒针估算面积实验
圓的切線方程
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圖例
三平行線上作正三角形
Sequence指令練習(包絡線：橢圓)
三角形外心
分数加法 Fraction Addition
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Area
Cube
Curve Sketching
Diagrams
Surface