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Outer Oldknow Point |
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The Outer Oldknow Point is the perspector of the Intouch triangle of the Reference triangle and the Outer Soddy triangle. 
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Outer Oldknow Point |
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The Outer Oldknow Point is the perspector of the Intouch triangle of the Reference triangle and the Outer Soddy triangle.
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A1B1C1 - Intouch triangle.