The Line tool in the Sketch > Create panel lets you create a connected series of lines and arcs as sketch geometry or construction geometry in an active sketch in Fusion.
You can use the following command to create lines in an active sketch:
The Line command creates a series of connected lines and arcs in the active sketch.
You click to place the first point, then click to place a second point to define the first line segment. Continue clicking to place additional line segments, or click and drag to create connected arc segments.