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四邊形四個九點圓共點
Author:
連琨銘
GeoGebra
New Resources
畫出對稱圖形
兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
【案例】2018年全国1卷理科12题
拼砌四邊形
Discover Resources
行程圖 (Travel Graph)
對數的遞增或遞減(底數小於1)
曲柄搖桿接雙搖桿
特殊時鐘模擬
Copy of 多边形外角和
Discover Topics
Line Segment
General Quadrilateral
Pythagoras or Pythagorean Theorem
Cosine
Vectors 2D (Two-Dimensional)