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P4周界_上
Author:
fannylauwailan
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（一）
三位數除以一位數（二）
第八周作业
兩組對邊相等和有直角的四邊形
Discover Resources
齒輪連接的方法與轉動。
花瓶
畢氏定理動態證明
試繪
同旁內角
Discover Topics
Solids or 3D Shapes
Arithmetic Operations
Arithmetic Mean
Dilation
General Quadrilateral