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同心多邊形
Author:
何姵葶
GeoGebra
New Resources
正方形雪花图案
双心四边形
撒针估算面积实验
直線的斜率：水平變化 & 鉛垂變化
直線的斜率
Discover Resources
Quiz on Equation of Straight Lines 直線的方程：測驗
ggb-fs-a1
參數式_1
雙曲線的漸進線2
数学之美
Discover Topics
Planes
Parallelogram
Standard Deviation
Rotation
Conic Sections