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parabola, b varies, a, c fixed
Author:
perspect
GeoGebra
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GeoGebra合作伙伴关系
半圆的滚动
伞骨架模型
高中数学教材配套资源【人教】
k的几何意义
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指數函數圖形(底互為倒數)
Angle Sum in a Triangle
半角公式證明
竞猜游戏：说出图中角的大小
Sec1302 Example0203
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Optimization Problems
Angles
Vectors 2D (Two-Dimensional)
Cuboid
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