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Author:
chen mingchuan
GeoGebra
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画直线等分三角形的面积
拼砌四邊形
第八周作业
四邉形 (四年級) 教師版
畫出對稱圖形
Discover Resources
先估算，後看解釋
外心
垂心(劉虹圻623)
包含除法（1 ÷分數）的副本
已知長方形周界和長求闊
Discover Topics
Integral Calculus
Logarithm
Cylinder
Frequency Distribution
Solids or 3D Shapes