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內切圓
Author:
楊明德
Topic:
Incircle or Inscribed Circle
GeoGebra
New Resources
【案例】2013年安徽高考15题
兩位數除以一位數（二）
球體建築師
畫出對稱圖形
兩位數加法
Discover Resources
demo
點的堆墮
等弦則等弦心距
AirParcel
双镜面反射问题
Discover Topics
Parametric Curves
Vectors 2D (Two-Dimensional)
Quadrilaterals
Indefinite Integral
Exponential Functions