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線性變換矩陣（二階）的副本
Author:
xiaodandan
,
arist
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
判斷球體
兩組對邊相等的四邊形
兩位數除以一位數（一）
Discover Resources
平面鏡成像 Image of Plane Mirror Reflection
四邊形的邊長與限制
線性規劃
第4課
圆在直线上滚动
Discover Topics
Surface
Conic Sections
Distributions
Cone
Division