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密鋪
Author:
chen mingchuan
GeoGebra
New Resources
兩組對邊相等的四邊形
兩位數加法
球体的体积推导
兩位數除以一位數（一）
【案例】圆柱体内放置一个大球六个小球
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Addition and Subtraction of Directed Numbers (2) 有向數加減(2)
軌跡,摺紙,滾動,實驗觀察,曲線
平方差
圓與直線距離
Copy of Quiz on Compass Bearings
动圆与两圆外切与内切(2)
Discover Topics
Angles
Rhombus
Symmetry
Conditional Probability
LCM and GCD