To Rotate a View(s) to Align It with a Planar Element
Key in ROTATE VIEW ELEMENT.
Select the element.
This data point also indicates the part of the element with which to align the view's x-axis.
Select the view(s).
The view is rotated so that its x-axis is aligned with edge of selected element and its z-axis is perpendicular to selected element.
Note: Whether the view is rotated clockwise or counterclockwise is determined by the direction of the selected element. The origin of the x-axis is always towards the start point of the element.
Element
View x-axis is
Linear
Aligned with selected line segment.
Non-linear
Tangent to selected element at the selection point.