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圓內弦中點軌跡
Author:
鄭宏偉
GeoGebra
New Resources
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）
球体的体积推导
錐體建築師
Discover Resources
由組織圖到頻數多邊形
Quiz on Simplifying Ratios 比的化簡：測驗
Mars Retrograde
外心(劉虹圻 高二三26)
線性變換矩陣（二階）的副本
Discover Topics
Perimeter
Multiplication
Statistical Characteristics
Vectors 3D (Three-Dimensional)
Cylinder