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好玩的輪盤
Author:
李春培
好玩的輪盤
GeoGebra
New Resources
圓周公式的應用
常见四边形是否是双心四边形
平行線的斜率
圓的切線方程
垂直線的斜率
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梯形
proof51 柯承志
Solve Linear Inequalities graphically(二元一次不等式的圖解)
根據百分率找數量（二）: 例1的副本
六年級 行程圖
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Circumcircle or Circumscribed Circle
Random Experiments
Terms
Triangles
Cylinder