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正十二面體轉正二十面體
Author:
arist
正十二面體轉正十面體
GeoGebra
New Resources
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
球体的体积推导（优化版）
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
Discover Resources
阿波羅尼亞圓
HKMO 2008 Question 3 Demonstration (Geometric Construction)
ex 6
認識時鐘
數學電腦繪圖&解題
Discover Topics
Isosceles Triangles
Pythagoras or Pythagorean Theorem
Area
Calculus
LCM and GCD