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Centres of Triangles
Author:
BBSS4CD
GeoGebra
New Resources
斐波那契螺旋弧线（表格法-可动态调节）
龙形曲线-分形龙
正方形雪花图案
第八周作业1
撒针估算面积实验
Discover Resources
angle0428
vector
二次函數
橢圓
長方形的周界與長和闊的關係 (教師版)
Discover Topics
Triangles
Linear Functions
Addition
Symmetry
Cylinder