True Length of a Segment

In the following coordinate system a [color=#9900ff]segment s[/color][color=#333333] is given. [br][/color]Besides, the [color=#9900ff]segment s[/color][color=#333333] is drawn as [/color][color=#ff0000]s'[/color] in the plan view and [color=#333333]as [/color][color=#38761d]s''[/color][color=#333333] in the front elevation.[br][br][/color]The distance of point A from the xy-plane is called [color=#0000ff][math]\Delta[/math]z[sub]A[/sub][/color]. This distance is equal to the z-coordinate of point A.[br][br]The distance of point B from the xy-plane is called [color=#6fa8dc][math]\Delta[/math]z[sub]B[/sub][/color][color=#333333].[/color][br]
Task 1
Click on "Top View" to see the segment from above.[br]Click on "Back", to return to the initial position.[br]Click on "Front View" to see the segement in the front elevation.[br]Click on "Back", to return to the initial position.
Task 2
In which view is the segment displayed in true length?
Task 3
Activate the box "Rotating Point A" and observe the changes in the coordinate system.[br]What do you notice?
Task 4
Activate the box "Rotating Point B" and observe the changes in the coordinate system.[br]What do you notice?
Task 5
Activate the box "Rotating the segment" and move the slider "Rotate s".[br]What do you notice?
True Length of Segment s
The true length of the segment s is now shown as [color=#9900ff]s[sub]0[/sub][/color] in the plan view. [br]The true length of a line is represented by a dotted line.
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Information: True Length of a Segment