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乘积为定值的椭圆和双曲线
Author:
亿铭
Topic:
Conic Sections
GeoGebra
New Resources
第八周作业
撒针估算面积实验
百分數及其應用
正方形雪花图案
斐波那契螺旋弧线（表格法）
Discover Resources
gct-a01-jc091v1-27 三角形旋轉
test
碎形
同旁內角---垂直平行綫
橢圓軌跡
Discover Topics
Polygons
Vectors
Surface
Distributions
Circle