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congruent (SA)
Author:
Ricky Chan
GeoGebra
New Resources
画直线等分三角形的面积
錐體建築師
柱體建築師
四邊形的特性
兩位數加法
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this is math pic
伸縮變換
乘法
gjh-h04-01 多個堆疊的直角三角形
Copy of cos, sin 與單位圓
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Ellipse
Means
Numbers
Geometry
Statistics