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The 3 forms of quadratic functions
Author:
王乐
GeoGebra
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活动三：应用性质
折扣
撒针估算面积实验
异形操场
平行線的判定
Discover Resources
中一︰全等圖形（平移、旋轉、反射）
圓與三角形中點的軌跡
三角形的簡介
圆锥曲线折纸操作题（教材案例）
中国纸质灯笼
Discover Topics
Statistical Characteristics
Scalene Triangles
Sine
Histogram
Orthocenter