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弹簧变化
Author:
zgc112
GeoGebra
New Resources
【案例】2013年安徽高考15题
三位數除以一位數（一）
兩位數加法
拼砌四邊形
兩組對邊相等的四邊形
Discover Resources
三角形重心
三角形的內角和＝180度
立體圖形的截面
兩面角
折纸角度探究2
Discover Topics
Rotation
Special Points
Vectors 2D (Two-Dimensional)
Statistics
Linear Programming or Linear Optimization