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真方位角與羅盤方位角
Author:
W.L. Wong, Albert
GeoGebra
New Resources
第八周作业
算柱 (兩位數)
畫出對稱圖形
三位數除以一位數（二）
兩位數除以一位數（一）
Discover Resources
z=x^2-y^2
科博館的水畢氏三角
利用邊對摺找三角形的內心
可积准则
希羅公式
Discover Topics
Differential Equation
Subtraction
Straight Lines
Addition
Vectors 2D (Two-Dimensional)