The Degree menu item is for selecting the degree of a B-spline or a NURBS curve. If the selected curve type is Bézier or rational Bézier, Degree has no effect since the degree is determined by the number of control points. The degree of this curve is shown in this menu item.
Before a B-spline or a NURBS curve can be displayed, its degree (from 1 to 10) must be selected with Degree. The minimum degree and maximum degree of a B-spline or a NURBS curve is 1 and 10, respectively. The selected degree is shown in this menu item.