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Author:
cktsang
permutation (chi. ver.)
GeoGebra
New Resources
柱體建築師
判斷球體
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
異分母分數減法
Discover Resources
gsx-b1 數線上的點
線段比較大小-01
Ex5C#10
ㄩㄢ
tttttrr
Discover Topics
Fractions
Line Segment
Optimization Problems
Reflection
Cuboid