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重心
Author:
呂麗珠
GeoGebra
New Resources
第八周作业
算柱 (兩位數)
三位數除以一位數（一）
拼砌四邊形
找出對稱軸
Discover Resources
畫三角形 題3b
平移
How to draw a hexagon with ruler and compasses?
纏繞畫
hjzx123456
Discover Topics
Intersection
Interest Calculation
Sphere
Triangles
Solids or 3D Shapes