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111mathA
Author:
Wu Xiao-Ren
GeoGebra
New Resources
拼砌四邊形
直角坐標平面上的旋轉變換
球體建築師
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
Discover Resources
柱體建築師 1
與三半圓相切之圓
拋物線的平移
等分旋轉
图中的三角形面积何时最小？（许兴华数学）
Discover Topics
Boxplot
Circumcircle or Circumscribed Circle
Plane Figures or Shapes
Sequences and Series
Standard Deviation