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把心獻給妳
Author:
Wu Xiao-Ren
GeoGebra
New Resources
圓的切線方程
探究三角形的全等條件
垂直線的斜率
三位數除以一位數（一）
平行線的斜率
Discover Resources
final report
等積的正六邊形與正方形
locus of a segment
放缩尺
內外角平分線的副本
Discover Topics
Circumcircle or Circumscribed Circle
Reflection
Similar Triangles
Quadratic Equations
Median Line