To create certain elements, you draw them by sketching. Sketching is also required to define other types of geometry, such as extrusions, openings, and regions.
About Sketching Arcs
Several arc tools are available for sketching curves or rounded corners.
About Sketching Ellipses
Ellipses are available for model lines, detail lines, beams, walls, and sketch-based elements.
About Sketching Splines
When sketching a spline, try to use the simplest lines (or combination of lines) to achieve the desired results.
Close an Open Loop
You can use the Close snap to close valid open loops when sketching.
Modify Sketched Elements
In sketch mode, you can move the entire sketch or modify the line segments.
About Creating 2D Geometry
When working with a family in the Family Editor, create 2D family geometry using the Model Line and Symbolic Line tools available in the Family Editor.
Add a Reference Line
Create a reference line that you can use when creating model geometry, or to create constraints for the geometry.