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證平行四邊形 (對角線互相平分) (對邊 // 且相等)
Author:
W.L. Wong, Albert
GeoGebra
New Resources
找出對稱軸
錐體建築師
画直线等分三角形的面积
三位數除以一位數(一)
【案例】2018年全国1卷理科12题
Discover Resources
類尺規作圖
rabbit
Form 3 (中三)
My First Geogebra Book
动点
Discover Topics
Numbers
Cube
Isosceles Triangles
Symmetry
Volume