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Warm Up Locus Problem in GIHK workshop (Oct 13, 2012)
Author:
GeoGebra Institute of Hong Kong
,
Arthur Lee
Investigate locus of orthocentre when one vertex moves on a fixed circle.
GeoGebra
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apec
z`]]
Constructing the Perpendicular Line Through a Point on the Line
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Example of using color palette
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