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相同圖形的拼砌（三角形）
Author:
ho ting chit
Topic:
Triangles
GeoGebra
New Resources
算柱 (兩位數)
錐體建築師
第八周作业
画直线等分三角形的面积
三位數除以一位數（一）
Discover Resources
托勒密定理推廣到任意四邊形二
Properties of a Square
start and end clock face
圓內冪性質
必修二P101圆柱圆锥圆台
Discover Topics
Polygons
Solids or 3D Shapes
Orthocenter
Step Functions
Parabola