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鉛筆畫圓
Author:
Ching-Hui Chou
GeoGebra
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直線的斜率：水平變化 & 鉛垂變化
圓的基本性質
科赫雪花
中华人民共和国国旗
撒针估算面积实验
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角平分線
Proof72 徐晏翎
扇形面積
各種三角形
圓外切四邊形
Discover Topics
Derivative
Cuboid
Vectors
Prism
Distributions