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Author:
chen mingchuan
GeoGebra
New Resources
近似值：有效數字
長方體平面投影 (Codex版)
第八周作业
美國國旗 (Codex 版)
Nested spiral octagon
Discover Resources
正立方形與兩面角
西姆松定理推廣(西姆松圓)
congruent activity
Locus (Two points 2)
指数函数的副本
Discover Topics
Logarithm
Scatter Plot
Hypergeometric Distribution
Similar Triangles
Linear Programming or Linear Optimization