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內切圓半徑證明
Author:
陳兪宏
GeoGebra
New Resources
兩組對邊相等的四邊形
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
GeoGebra笔记功能体验课件
畫出對稱圖形
Discover Resources
正九邊形
量度的誤差 Errors in Measurement
Copy of 球面
畫三角形 第3題
随机模拟实验（撒豆子估算π）的副本
Discover Topics
Constructions
Incircle or Inscribed Circle
Parabola
Difference and Slope
Functions