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正九邊形
Author:
李春培
正九邊形
GeoGebra
New Resources
兩位數除以一位數（一）
柱體建築師
畫出對稱圖形
画直线等分三角形的面积
球體建築師
Discover Resources
ray tracing 2 lens
testing
圆锥的体积推导
八卦限
第八周作业3
Discover Topics
Trigonometric Functions
Random Experiments
Mathematics
Rhombus
Hypothesis Testing