-Vertex-
Remove, Break, Extrude, Weld, Target Weld, Chamfer, Connect, Remove Isolated Vertex
-Edge-
Insert Vertex, Remove, Split (←調べる), Chamfer, Bridge, Connect, Create Shape From Selection
-Border-
Cap
-Polygon-
Extrude, Bevel, Inset, Bridge, Flip, Hinge From Edge, Extrude Along Spline (←調べる),

Slice Plane, Quick Slice