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任务9：外凸的正方形
Author:
陈丽婷
GeoGebra
New Resources
【案例】2013年安徽高考15题
錐體建築師
找出對稱軸
球體建築師
【案例】2018年全国1卷理科12题
Discover Resources
EX3.18
三角形3,4,5
量角器2
尤拉線
Modular Surface：1 / (1 + z²)
Discover Topics
Quadratic Functions
Addition
Parabola
Optimization Problems
Trapezoid