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mooc第四讲椭圆反射
Author:
单晨
GeoGebra
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兩組對邊相等的四邊形
兩位數除以一位數（二）
直角坐標平面上的旋轉變換
GeoGebra笔记功能体验课件
兩組對邊相等和有直角的四邊形
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弦的定理
hnrfgyhnjyngfnfg
MFS Pyth Thm 1
glt-c02-09 五角柱旋轉
直線的投影量
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Subtraction
Combinatorics
Hypothesis Testing
Correlation
Rotation