From two points and two circle centres an angle 4 point is constructed.

The desired angle can be chosen here. The switch over only follows after 

clicking the “OK” button.

Angle 4 point made of a multi point line and two points.

Angle 4 point to be constructed from two multi point lines (Image1)

Image 2: here multi point line 1 has been marked before multi point line 2

in the construction window

Image 1                                                                   Image 2

Image 3: multi point line 2 has been marked before multi point line 1

Image 3

Certainly an angle 4P can also be constructed from two distances PP.

Here too, the sequence of marking in the construction window determines about

the kind of the displayed angle.