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線性變換矩陣（二階）的副本
Author:
xiaodandan
,
arist
GeoGebra
New Resources
判斷球體
直角坐標平面上的旋轉變換
Fibonacci Clock
兩組對邊相等和有直角的四邊形
Nested spiral octagon
Discover Resources
圓上的角任務(三): 同弓形內的圓周角
垂線作圖
不等式組
圆台的侧面展开动画
平行四边形变形
Discover Topics
Rational Numbers
Rhombus
Statistics
Differential Calculus
Power Functions