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椭圆内反射
Author:
dhc987
GeoGebra
New Resources
圓的切線方程
百分數及其應用
撒针估算面积实验
活动三：应用性质
盈利與虧蝕
Discover Resources
gjc097b21 點對三角形的對稱
Origami-Trisect An Angle
重複
比較分數的大小(小六)
變化圖形製作
Discover Topics
Rectangle
Quadratic Equations
Linear Functions
Conic Sections
Bar Chart or Bar Graph