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硬幣繞多邊形面積
Author:
AlexWang
GeoGebra
New Resources
兩組對邊相等的四邊形
三位數除以一位數（一）
画直线等分三角形的面积
拼砌四邊形
第八周作业
Discover Resources
三垂線
Homework6
Origami-Trisect An Angle
Magic Matches
已知長方形周界和長求闊
Discover Topics
Hypothesis Testing
Rectangle
Square
Surface
Root