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面鏡的反射
Author:
dunst kang
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（二）
判斷球體
兩組對邊相等和有直角的四邊形
找出對稱軸
Discover Resources
試證明：A=B+C
線段與角度的裝飾
點到直線距離-3 最短發生在垂直時
基础知识
S0S1 柱體與椎體
Discover Topics
Circle
Linear Programming or Linear Optimization
Rational Numbers
Unit Circle
Random Variables