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平移和压缩2
Author:
lzp80
GeoGebra
New Resources
第八周作业1
盈利與虧蝕
第三周作业效果演示
直線的斜率：水平變化 & 鉛垂變化
双心四边形
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垂足三角形
test
三角形內角和
邊長與三角形
S3 WS4.3 Q04(3D圖)
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Incircle or Inscribed Circle
Numbers
Triangles
Probability
Orthocenter