1) Construct a segment [icon]/images/ggb/toolbar/mode_segment.png[/icon][br][br]2) Label ([icon]/images/ggb/toolbar/mode_showhidelabel.png[/icon])the endpoints of the segment as points A and B.[br][br]3) Measure the length of the segment. [icon]/images/ggb/toolbar/mode_distance.png[/icon][br][br]4) Drag the segment and change its length. [icon]/images/ggb/toolbar/mode_move.png[/icon][br][br]5) Construct the midpoint and label as point C. [icon]/images/ggb/toolbar/mode_midpoint.png[/icon][br][br]6) Measure AC and CB to confirm C is the midpoint.