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鏡射
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
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長方體平面投影 (Codex版)
美國國旗 (Codex 版)
小数 的副本
兩組對邊相等的四邊形
判斷球體
Discover Resources
中線定理(阿波羅尼奧斯)定理推廣二：向四邊形推廣
垂直線的斜率_hui sir
軌跡觀察---心臟線
四邊形外接正方形
加减乘除运输出题器
Discover Topics
Orthocenter
Definite Integral
Trigonometric Functions
Translation
Calculus