Sherman's fourth side of a triangle (Q2904610)
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scientific article; zbMATH DE number 6066133
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Sherman's fourth side of a triangle |
scientific article; zbMATH DE number 6066133 |
Statements
15 August 2012
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Sherman's fourth side of a triangle
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nine point circle
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incircle
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circumcircle
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Gergonne point
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Sherman's fourth side of a triangle (English)
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The author gives two simple ruler-and-compass constructions of the line, which, like the sidelines of the triangle, is tangent to the incircle and cuts the circumcircle in a chord with midpoint on the nine-point circle.
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