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特製的門 2
Forfatter
李春培
特製的門2
https://www.facebook.com/video.php?v=730160733696759&fref=nf
GeoGebra
Nye Materialer
sanjiaohanshu
兩組對邊相等的四邊形
拼砌四邊形
近似值：有效數字
直角坐標平面上的旋轉變換
Opdag Ressourcer
Q3-11
rotational symmetry_4
Angle between line & plane
酷狗音乐
实验：指数函数的图像与性质
四邊形的特性
Udforsk emner
Cirkel
Gennemsnit
Rombe
Matematik
Vectorer 2D (Todimensionel)