What is represented by the dashed line on a pattern piece?

The dashed line on a pattern piece represents the sewing line. This line indicates where the seams should be sewn to assemble the garment accurately. It is crucial for ensuring proper fit and construction. The dashed line is typically positioned inside the cutting line, which defines the outer edge of the fabric piece. By following the dashed line, sewists can make precise stitches that adhere to the intended design and structure of the garment, resulting in better aligning of fabric pieces and contributing to overall quality in the finished product. Understanding this distinction is essential for successful pattern construction and garment assembly.