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凸透镜成像规律
Author:
孙敏捷
Topic:
Geometry
GeoGebra
New Resources
撒针估算面积实验
异形操场
斐波那契螺旋弧线（表格法-可动态调节）
双心四边形
正方形雪花图案
Discover Resources
waaachen
雪花(碎形)
三角形的內心
關燈遊戲3x3 Lights Out Game
拖拉小正方体
Discover Topics
Symmetry
Parametric Curves
Algebra
Dilation
Volume