Mirror elements

• Click on the Mirror Elements icon in the Modify toolbar.

• First, click on the vertical mirror line.

• Then click on all the elements which should be mirrored (the circle and the inner corner). You can hold down the left mouse button while dragging out a window around the elements.

• Now do the same and mirror along the horizontal mirror line. Continue mirroring until your drawing looks similar to the one below.

• Click on the Delete icon and delete the mirror lines.