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多边形的展开
Author:
赵林
GeoGebra
New Resources
球體建築師
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
畫出對稱圖形
兩組對邊相等和有直角的四邊形
Discover Resources
國中(1-1等線段作圖)
YIPPUIMEIgeogebra
平面直角坐标系
旋轉長方形
圓周公式的應用
Discover Topics
Area
Frequency Distribution
Median Line
Quadratic Equations
Rational Numbers