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zuiduan
Author:
luodeqin@keleshuxue.com
GeoGebra
最短的弦
最短的弦
New Resources
球體建築師
畫出對稱圖形
三位數除以一位數（二）
球体的体积推导
異分母分數減法
Discover Resources
梯形有甚麼特性？
方格紙上畫平行四邊形2
兩函數間面積
正六面體摺疊
horizontal
Discover Topics
Volume
Linear Programming or Linear Optimization
Matrices
Pyramid
Reflection