[list=1][*]Use the [icon]/images/ggb/toolbar/mode_point.png[/icon] tool to locate two points in the plane given in the Applet below. [/*][*]Then use the [icon]/images/ggb/toolbar/mode_segment.png[/icon] tool to draw the line that contains the two points. [/*][*]Now use the [icon]/images/ggb/toolbar/mode_move.png[/icon] tool (click and hold) to rotate the plane around to see that the line is in the same plane as the points (not above nor below).[/*][/list]

In the second applet below, use the [icon]/images/ggb/toolbar/mode_point.png[/icon] tool to plot two points that are NOT in the given plane.[br]Then use the [icon]/images/ggb/toolbar/mode_segment.png[/icon] tool to draw the line that contains these two points.[br][br]Now use the [icon]/images/ggb/toolbar/mode_move.png[/icon] tool (click and hold) to see that your line is either above or below the plane.[br][br]Finally use the [icon]/images/ggb/toolbar/mode_point.png[/icon] and the [icon]/images/ggb/toolbar/mode_planethreepoint.png[/icon] tool to create the plane that contains the line you made from the previous steps.