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graph of functions
Author:
Kwan Tsz Chun
GeoGebra
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圓的基本性質
漂亮的摇摆曲线
探究三角形的全等條件
三角函数 的副本
【案例】2018年全国1卷理科12题
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選擇合適的「中間人」
整數或分數÷分數_ 工作紙（一）_題3c
Redefining Trigonometry by a Unit Circle
圓與切線
Copy of 愛心
Discover Topics
Pyramid
Parametric Curves
Bar Chart or Bar Graph
Difference and Slope
Arithmetic Mean