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椭圆的定义
Author:
guomenglin
Topic:
Ellipse
GeoGebra
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三位數除以一位數(二)
三位數除以一位數(一)
拼砌四邊形
兩組對邊相等和有直角的四邊形
球體建築師
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認識線型函數
量筒
九九乘法表 - Multiplication Table的副本
翰林數學_2下_CH3-4_大角對大邊
數字鐘 的複本
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Curve Sketching
Rectangle
Confidence Interval
Random Variables
Parallelogram