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對稱圖形張鈺誼
Author:
lily44559966
GeoGebra
New Resources
盈利與虧蝕
比較五件物件的重量
第八周作业1
百分數及其應用
活动三：应用性质
Discover Resources
垂足三角形
內外角平分線
Rectangle
圖二 的複本
（三）观察物体
Discover Topics
Statistics
Complex Numbers
Cone
Parallelogram
General Quadrilateral