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龍騰4_1-1習6-2
Author:
廖傑成
GeoGebra
New Resources
異分母分數減法
找出對稱軸
兩位數加法
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
Discover Resources
龍騰4_1-1講段7
中垂線性質
基測會考數學
点的轨迹
國旗1
Discover Topics
Vectors 3D (Three-Dimensional)
Standard Deviation
Quadratic Equations
Ratios
Area