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直线与平面垂直的折纸实验
Author:
孟宝兴
GeoGebra
New Resources
四邊形的特性
兩組對邊相等和有直角的四邊形
兩位數加法
判斷球體
兩組對邊相等的四邊形
Discover Resources
梯形的面積
laptop height
分段函数动点轨迹
二分法
折叠问题一例
Discover Topics
Linear Equations
Sine
Fractions
Rotation
Quadrilaterals