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<!-- This file is to illustrate the use of the constraint line_angular_bisectors_of_two_lines .
It still has not been run on any DGS, so it may contain bugs. -->
<construction xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../xml/intergeo.xsd">
<elements>
<point id="P">
<homogeneous_coordinates>
<double>1</double>
<double>0</double>
<double>1</double>
</homogeneous_coordinates>
</point>
<point id="Q">
<homogeneous_coordinates>
<double>0</double>
<double>1</double>
<double>1</double>
</homogeneous_coordinates>
</point>
<point id="R">
<homogeneous_coordinates>
<double>-1</double>
<double>0</double>
<double>1</double>
</homogeneous_coordinates>
</point>
<point id="S">
<homogeneous_coordinates>
<double>0</double>
<double>-1</double>
<double>1</double>
</homogeneous_coordinates>
</point>
<line id="l">
<homogeneous_coordinates>
<double>0</double>
<double>1</double>
<double>0</double>
</homogeneous_coordinates>
</line>
<line id="m">
<homogeneous_coordinates>
<double>1</double>
<double>0</double>
<double>0</double>
</homogeneous_coordinates>
</line>
<line id="a">
<homogeneous_coordinates>
<double>1</double>
<double>1</double>
<double>0</double>
</homogeneous_coordinates>
</line>
<line id="b">
<homogeneous_coordinates>
<double>1</double>
<double>-1</double>
<double>0</double>
</homogeneous_coordinates>
</line>
</elements>
<constraints>
<free_point>
<point out="true">P</point>
</free_point>
<free_point>
<point out="true">Q</point>
</free_point>
<free_point>
<point out="true">R</point>
</free_point>
<free_point>
<point out="true">S</point>
</free_point>
<line_through_two_points>
<line out="true">l</line>
<point>P</point>
<point>R</point>
</line_through_two_points>
<line_through_two_points>
<line out="true">m</line>
<point>Q</point>
<point>S</point>
</line_through_two_points>
<line_angular_bisectors_of_two_lines>
<line out="true">a</line>
<line out="true">b</line>
<line>l</line>
<line>m</line>
</line_angular_bisectors_of_two_lines>
</constraints>
</construction>
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