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求公切線段長
Author:
Gideon Huang
GeoGebra
New Resources
算柱 (兩位數)
【案例】2013年安徽高考15题
柱體建築師
三位數除以一位數（一）
畫出對稱圖形
Discover Resources
雙曲線
Slope 斜率 - 概念及定義 (3)的副本
劉徽的「割圓術」的副本
Addition and Subtraction of Directed Numbers (1)
直线与平面垂直的折纸实验
Discover Topics
Rotation
Arithmetic Mean
Means
Diagrams
Pythagoras or Pythagorean Theorem