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gjh-e01-04 未知數角度的三角形
Author:
張芃婕
GeoGebra
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兩組對邊相等的四邊形
四邉形 (四年級) 教師版
第八周作业
兩位數除以一位數(二)
異分母分數減法
Discover Resources
sinx & cscx
對鄰邊之對
定周长的正多边形面积变化规律(含圆)
畢氏定理
仰角和俯角
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Planes
Constructions
Perimeter
Standard Deviation
Similar Triangles