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Simson　Theorem
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More examples in elementary plane geometry in origami
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Excenter
A simple example of the Excenter of a triangle is added.
Version Eos3.3.1
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ProofDocFormat
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Revision Eos3.3.0.7
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The use of a global variable in Options
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Geometry-example
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UnList, DuplicatePoint,ProjectPoint
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