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光源距離 Light Source Distance
Author:
W.L. Wong, Albert
GeoGebra
New Resources
錐體建築師
找出對稱軸
三位數除以一位數（二）
兩位數除以一位數（一）
異分母分數減法
Discover Resources
錐體建築師 5
點之極線定理 / polar of a point theorem
切線性質
基礎作圖2
鉛筆畫圓
Discover Topics
Median Value
Planes
Function Graph
Subtraction
Translation