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九點圓
Author:
Wu Xiao-Ren
三角形的三中點,三垂足,三頂點到垂心中點共圓
GeoGebra
New Resources
多邊形的面積
三位數除以一位數(一)
球体的体积推导
【案例】圆柱体内放置一个大球六个小球
画直线等分三角形的面积
Discover Resources
冥函数
Copy of 固定周界的長方形的面積變化
congruent (SSS)
等截距和直線包絡拋物線
滑桿2
Discover Topics
Statistical Characteristics
Continuity
Terms
LCM and GCD
General Quadrilateral