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Euler Line
作者:
David Sladkey
主題:
幾何中心或重心
,
垂心
This applet explores the Euler Line. You can verify the Orthocenter, Circumcenter and the Centroid. Then you can see how all three of those points are always linear.
GeoGebra
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探索主題
最小公倍數與最大公因數
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正切線或正切