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Author:
acchu
GeoGebra
New Resources
常见四边形是否是双心四边形
百分數及其應用
斐波那契螺旋弧线(表格法)
双心四边形
第三周作业效果演示
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構成三角形的邊長條件
電子幾何條(2014)
相同圖形的拼砌(梯形)
ma_test
椭圆的中点弦的轨迹.许兴华数学
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Diagrams
Means
Circumcircle or Circumscribed Circle
Logarithmic Functions
Linear Programming or Linear Optimization