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集合3
Author:
sschy
GeoGebra
New Resources
异形操场
直線的斜率：水平變化 & 鉛垂變化
常见四边形是否是双心四边形
折扣
盈利與虧蝕
Discover Resources
畫三角形 題3d
Similar triangles
線外一點
straight line
找中點軌跡
Discover Topics
Complex Numbers
Statistics
Sequences and Series
Ellipse
Calculus