5.3 Button ’Segment’

The segment-button constructs a segment if suitable objects are selectd.

If not, the user is prompted to select two points as start- and endpoint for a new segment.

In this case, not all possibilities to construct a segment show in a popup-menu, as the intersections of triangle and parallelogram with each other and planes are segments, too. Those intersections can be constructed using the button ’intersection’.