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dhc987
GeoGebra
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三位數除以一位數(一)
讀磅
多邊形的面積
圓的切線方程
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Apollonius Problem poncelet fouche
向量的伸縮
轉移矩陣 (馬可夫鏈)的副本
两角差的余弦公式的证明
动圆与两圆外切与内切(2)
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Distributions
Rotation
Terms
Orthocenter
Scalene Triangles