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優良作品1
Author:
Ching-Hui Chou
GeoGebra
New Resources
近似值：有效數字
Earth with coastline
兩組對邊相等和有直角的四邊形
判斷球體
長方體平面投影 (Codex版)
Discover Resources
做過圓外兩點的一圓並與另一圓相切
七巧板
與三個半圓相切之圓的填滿
小船平移2
函数奇偶性的图像特征
Discover Topics
Mathematics
Standard Deviation
Triangles
Set Theory
Piecewise Functions