LineJoin
Specifies how to join consecutive line or curve segments in a figure (subpath) contained in a GraphicsPath object.
Bevel = 1
Specifies a beveled join. This produces a diagonal corner.
Miter = 0
Specifies a mitered join. This produces a sharp corner or a clipped corner, depending on whether the length of the miter exceeds the miter limit.
MiterClipped = 3
Specifies a mitered join. This produces a sharp corner or a beveled corner, depending on whether the length of the miter exceeds the miter limit.
Round = 2
Specifies a circular join. This produces a smooth, circular arc between the lines.