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沈暐珊 橢圓反射
Author:
fu0 fu6
GeoGebra
New Resources
活动三：应用性质
第八周作业
常见四边形是否是双心四边形
第八周作业1
斐波那契螺旋弧线（表格法-可动态调节）
Discover Resources
判斷柱體11
Redefining Trigonometry by a Unit Circle
Tangent to circle
正二十面體內接黃金矩形
垂心
Discover Topics
Pythagoras or Pythagorean Theorem
Tangent Function
Vectors 3D (Three-Dimensional)
Tangent Line or Tangent
Algebra