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直角三角形的內心與相似
Author:
鍾文欽
GeoGebra
New Resources
三位數除以一位數（二）
算柱 (兩位數)
【案例】圆柱体内放置一个大球六个小球
異分母分數減法
第八周作业
Discover Resources
volleyball throughing
題 7
面外一點
Question 1(Angle)
比較數量-1
Discover Topics
Symmetry
Vectors
Random Variables
Parametric Curves
Prism