Ng Kin Keung – Resources – GeoGebra

Locus Example 4 (Fixed distance to a line segment)
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Locus Example 3 (Fixed distance to a line)
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Locus Example 2 (Fixed distance to a fixed point)
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Distance between a point and a line
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Locus Example 1 (Chinese Chess: General and Horse)
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Try1
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Matrices
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Ng Kin Keung