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IMO2015C
Author:
Terence
GeoGebra
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活动三:应用性质
中华人民共和国国旗
常见四边形是否是双心四边形
折扣
第八周作业3
Discover Resources
邊長與三角形(一)
Quiz on Addition and Subtraction of Directed Numbers (2) 有向數加減測驗(2)
Sequence指令練習(n的平方根)
多項式函數
正五角柱展開
Discover Topics
Line Segment
Sphere
Rotation
Conic Sections
Quadrilaterals