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Proof without words : Steiner'ellipse of a triangle
Author:
Daniel Mentrard
Topic:
Ellipse
GeoGebra
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Geometric linkage
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Dividing a 2-digit number by a 1-digit number (1)
Dividing a 2-digit number by a 1-digit number (2)
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bug SelectedIndex
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Triangle rotated 360 degrees
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