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全等三角形
Author:
孟宝兴
GeoGebra
New Resources
三位數除以一位數（一）
球體建築師
錐體建築師
画直线等分三角形的面积
【案例】圆柱体内放置一个大球六个小球
Discover Resources
三角函數圖解
點跟直線的距離
prism
slide base
tesselation
Discover Topics
Circle
Arithmetic Operations
Statistical Characteristics
Curve Sketching
Sine