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相切圓之圓半徑
Author:
曾慧敏
GeoGebra
New Resources
科氏力 (Coriolis Force)
常见四边形是否是双心四边形
斐波那契螺旋弧线（表格法）
双心四边形
百分數及其應用
Discover Resources
仙后座找北極星 (底稿)
invariance interval
小六_容量與體積問題
椭圆滚动
模板
Discover Topics
Vectors 3D (Three-Dimensional)
Logarithmic Functions
Complex Numbers
Pyramid
Multiplication