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ptccs2new
Author:
Cheung Wing Chuen
GeoGebra
New Resources
三位數除以一位數（二）
直角坐標平面上的旋轉變換
近似值：有效數字
算柱 (兩位數)
【案例】2018年全国1卷理科12题
Discover Resources
畫三角形 題1c
反演的應用：鞋匠的小刀
door
橢圓1--同心圓法
[洋葱] 给定面积找点(0057)
Discover Topics
Binomial Distribution
Upper and Lower Sum or Riemann Sum
Cone
Confidence Interval
Line Segment