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如何求切線長
Author:
luke huang
GeoGebra
New Resources
四邊形的特性
判斷球體
兩組對邊相等和有直角的四邊形
異分母分數減法
兩位數除以一位數（一）
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題4
Vector in R2
織布機織布機
圆柱沿着螺线展开成平行四边形
画直线等分三角形的面积
Discover Topics
Geometric Distribution
Congruence
Ellipse
Fractal Geometry
Matrices