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gjc090a23 園內三角形與角度
Author:
謝定原
GeoGebra
New Resources
双心四边形
常见四边形是否是双心四边形
折扣
椭圆内切圆链
科赫雪花
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賺賠:例2
正弦定理
六面體與八面體
題二
跳棋棋盘
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Function Graph
Plane Figures or Shapes
Rhombus
Cube
Equations