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三角形面積與內切圓半徑
Author:
李春培
三角形面積與內切圓半徑
GeoGebra
New Resources
球体的体积推导
【案例】2013年安徽高考15题
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（二）
畫出對稱圖形
Discover Resources
Is this a prism 9
同心圓和線段-3(線段到最外圓有小圓)
Areas of squares and rectangles_Question A至E
畫鐘面的副本
Congruent Triangle (ASA)
Discover Topics
Hypergeometric Distribution
Vectors
Cosine
Histogram
Square