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正十二面體內接正四面體或內接正六面體
Author:
侯杰材
GeoGebra
New Resources
球体的体积推导(优化版)
畫出對稱圖形
兩位數加法
【案例】2013年安徽高考15题
兩位數除以一位數(一)
Discover Resources
三角形三邊上各一點最小周長
Scheimpflug image
量度身高
探索金字塔高度
sin的平移與伸縮
Discover Topics
Parabola
Numbers
Optimization Problems
Standard Deviation
Interest Calculation