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5-5 習題 選一題
Author:
3A516057 練鴻裕
GeoGebra
New Resources
三角函数 的副本
中华人民共和国国旗
龙形曲线-分形龙
活动三：应用性质
撒针估算面积实验
Discover Resources
小二、小三_時間（教師版）
君子球
CircleRoundCircle
量角器
Clock Simulation
Discover Topics
Numbers
Trigonometric Functions
Probability
Prism
Polynomial Functions