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切割正四面體
Author:
薛鈞聰
GeoGebra
New Resources
美國國旗 (Codex 版)
直角坐標平面上的旋轉變換
拼砌四邊形
sanjiaohanshu
兩組對邊相等的四邊形
Discover Resources
在釘點紙上畫垂直線
congruent activity
circle
HW question locus 6
分數化百分數(以方程計算，增潤項目)
Discover Topics
Rational Numbers
Rotation
Straight Lines
Angles
Continuity