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未命名
Author:
wen cui
Topic:
Constructions
GeoGebra
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中华人民共和国国旗
双心四边形
常见四边形是否是双心四边形
龙形曲线-分形龙
直線的斜率：水平變化 & 鉛垂變化
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畢氏定理動態證明(四塊直角三角形移動)
曲柄搖桿接雙搖桿
Apollonius Problem 7 CCP power inversion 12
正十二面體轉正二十面體
【高中物理】双电荷电势分布立体图
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Tangent Line or Tangent
Matrices
Scalene Triangles
Geometric Transformations
Rectangle