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平行四邊形_底5_高3
Author:
keihin
GeoGebra
New Resources
盈利與虧蝕
龙形曲线-分形龙
三角函数 的副本
第八周作业2
科赫雪花
Discover Resources
端點在兩圓周線段中點軌跡
gjzbh 矩陣與遞迴關係（3階）
勝者即正義，可愛即正義～(可用Ctrl+滑鼠滾輪放大界面)
angle between 2 planes 01
S3 WS4.3 Q05(3D圖)
Discover Topics
Circle
Trapezoid
Dilation
Triangles
Pythagoras or Pythagorean Theorem