Right-click the sketch and select Edit Sketch.
Click Trim Entities (Sketch toolbar) or Tools > Sketch Tools > Trim.
In the PropertyManager, under Options, select Power trim .
Click in the graphics area next to the first entity, and drag across the sketch entity to trim.
In an open sketch, select one or more sketch entities, a model face, or a model edge.
Click Offset Entities (Sketch toolbar) or Tools > Sketch Tools > Offset Entities.
Set the properties in the Offset Entities PropertyManager. …
Click or click in the graphics area.
In a sketch, click Dynamic Mirror Entities (Sketch toolbar) or Tools > Sketch Tools > Dynamic Mirror . In a part, click Mirror (Features toolbar) or Insert > Pattern/Mirror >Mirror. Create an opposite-hand version of a part. In a part, select a face or plane tomirror about, and then click Insert > Mirror Part.