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凹面鏡
Author:
joeyliaw.tw
GeoGebra
New Resources
算柱 (兩位數)
異分母分數減法
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
找出對稱軸
Discover Resources
ggxfs 凹面鏡的反射成像
試繪
圓與兩平行切線
Ex (RHS)
巧算周界
Discover Topics
Variance
Continuity
Vectors 2D (Two-Dimensional)
Logarithmic Functions
Pie Chart or Circle Chart