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geo123
Author:
hsu hung yang
hello
GeoGebra
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兩組對邊相等的四邊形
四邊形的特性
【案例】2013年安徽高考15题
柱體建築師
判斷球體
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三角形面積海龍公式
鏡射再旋轉
橢圓摺紙
拉面直径例题
正N边形在圆内的滚动
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Secant Line or Secant
Incircle or Inscribed Circle
Sequences and Series
Subtraction
Linear Regression