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[Misc]
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[Figure1]
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[Figure2]
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[Figure3]
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[Figure7]
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[Figure8]
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[Figure9]
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[Figure18]
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[Figure19]
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[Figure20]
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[Label1]
Caption=Step 3.
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FontName=Arial
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Desc=Надпись "Step 1."
X=-12.7518101022285
Y=8.1570061534327

[Label2]
Caption=Let's investigate anyway, where is the right position~~for point B (when point C lies on the third line?) For this,~~let's draw a dynamic locus of point C as point B moves.
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FontName=Arial
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Desc=Надпись "It is clear that when the triangle is already built,"
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[Label3]
Caption=To draw a simple locus, you must right-click point C,~~and choose "Locus properties -> Create Locus".~~But it won't change when we move the lines.~~~~A Dynamic Locus can change when we change any of~~initial conditions. To construct dynamic locus of point C ~~as point B moves along the line, select a "Dynamic Locus"~~tool on the toolbar, click point C and then point B.
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Desc=Надпись "To draw a simple locus, you must right-click point C,"
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Y=3.64792620221175

[Label4]
Caption=It is now seen that the locus is a line.~~We now want to explore this line. For example,~~what angle does the line constitute with our~~parallel lines? Is it always the same? What for other~~position of our parallel lines?
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[Label5]
Caption=But we can't explore the line! It's just a trace~~the point has drawn as it moved? What to do?
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X=.398247021398107
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[Button1]
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Caption=How to draw a locus?
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[Button2]
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Caption=Show me the locus!
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X=-12.4814093610175
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[Button3]
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Caption=How to explore the line?
Charset=204
FontName=Arial
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Forecolor=-2147483630
X=7.44084019599123
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Path=3LinesTriangle5.dgf

