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一元二次方程式-應用問題(兩圓相切)
Author:
均一
GeoGebra
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兩位數除以一位數（二）
近似值：有效數字
畫出對稱圖形
算柱 (兩位數)
柱體建築師
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三角形的重心軌跡
兩橢圓交集
(3D) Tasks: Pyramid, Paper folding & Solid of revolution[20170615]
立體三角測量(例五)
橢圓幾何性質,光學性質,生活應用
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Histogram
Normal Distribution
Cone
Vectors
Quadratic Functions