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和內圓外切且和外圓內切的軌跡
Author:
Tzhau Huang
GeoGebra
New Resources
球体的体积推导（优化版）
画直线等分三角形的面积
畫出對稱圖形
找出對稱軸
【案例】2018年全国1卷理科12题
Discover Resources
经纬度
翰林B4習p85_10
三塊斜線面積的一塊
Question 2
用圓作成的三角形
Discover Topics
Pythagoras or Pythagorean Theorem
Percentages
Kite
Standard Deviation
Power Functions