> For the complete documentation index, see [llms.txt](https://docs.dietrichs.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.dietrichs.com/dietrichs-intelligent-documentation/docs-de-en/2d-auxiliary-geometry/zeichenfunktionen/kreise.md). # Circles, Arcs, Ellipses ## Circles Circles can be entered using various functions: * Center + Radius * 2 Points * 3 Points * with Tangent The first three functions are self-explanatory from their names. The 'with Tangent' function allows entering a circle so that it tangentially touches one or more lines/circles. The difference to the regular snap function 'Tangent' is that not a line or circle is placed tangentially against an existing circle, but rather this circle is created by the function. To do this, first select a line, a circle or an arc to which the new circle should be tangent. The program then guides the user with various options until the circle is fully defined. ## Arcs Arcs can be entered using various functions: * 3 Points * Start + Center + End: start point, center point, end point of the arc * Start + Center + Angle: start point, center point, angle of the arc * Start + End + Height: start point, end point, height of the arc ## Ellipses Ellipses can be drawn simply by entering the two diameters. The ellipse can also be rotated by entering an angle. Ellipses can be edited with all functions that also apply to a circle. Ellipses are also taken into account when importing DXF or DWG files and when exporting DXF files. --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://docs.dietrichs.com/dietrichs-intelligent-documentation/docs-de-en/2d-auxiliary-geometry/zeichenfunktionen/kreise.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.