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测试 = =
Author:
lanyi
bakaRu帮忙看看…… 你可以随意移动A和B两个点，A1和B1会自动移动
GeoGebra
New Resources
近似值：有效數字
美國國旗 (Codex 版)
兩組對邊相等和有直角的四邊形
長方體平面投影 (Codex版)
Earth with coastline
Discover Resources
MATS3210 Q4 Yu Chun Kwan.ggb
ie 2
利用对称求线段和最值（移动端）的副本
圆锥的侧面展开图3D动画的副本
S3 WS4.3 Q02(3D圖)
Discover Topics
Surface
Similarity Transformation or Similarity
Trapezoid
Boxplot
Algebra