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代數運算：外心座標
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
【案例】2013年安徽高考15题
判斷球體
直角坐標平面上的旋轉變換
拼砌四邊形
Discover Resources
鏡面反射光線
容積上升(立體、平面)
中線定理(阿波羅尼奧斯)定理推廣一：斯圖爾(Stewart)定理
test
Orthographic views example
Discover Topics
Integers
Square
Arithmetic
Conic Sections
Angles