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和的完全平方
Author:
連琨銘
GeoGebra
New Resources
拼砌四邊形
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
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捷徑
Box method for multiplication
Square
Sequence指令作圖-3
雙曲線1 焦點法
Discover Topics
General Quadrilateral
Interest Calculation
Conic Sections
Isosceles Triangles
Cylinder