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三角形兩邊內接相似平行四邊形
Author:
Gideon Huang
GeoGebra
New Resources
四邉形 (四年級) 教師版
錐體建築師
異分母分數減法
三位數除以一位數（一）
兩組對邊相等和有直角的四邊形
Discover Resources
橢圓拋物面1
Clown
放射狀旋轉圖形(1)
鏡頭控制
畫等腰直角三角形
Discover Topics
Cylinder
Triangles
Kite
Exponent
Integers