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李洲意
Author:
Lee Chew Yee
GeoGebra
New Resources
sanjiaohanshu
近似值：有效數字
錐體建築師
【案例】2018年全国1卷理科12题
小数 的副本
Discover Resources
方向餘弦
congruent triangles
任意角的三角函数
線性規劃
冰淇淋
Discover Topics
Sequences and Series
Functions
Ratios
Quadrilaterals
Sphere