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希式半月形的變形
Author:
黃國斌
GeoGebra
New Resources
空间中两直线的位置关系
漂亮的摇摆曲线
第八周作业
球体的体积推导
三位數除以一位數（二）
Discover Resources
Quiz on Compass Bearings 羅盤方位角：測驗
等量公理
angles sum of a triangle 2
线性方程组
線性規劃_高二上_車工廠選擇的副本
Discover Topics
Geometry
Cube
Quadratic Equations
Orthocenter
Equilateral Triangles