Question

I
n the diagram we see a cube and four marked angles
.
How big
is the sum of those angles
?
the answer is 330 why

Answer 1

the sum should be 360° because the sum of all angles of a quadrilateral is 360°.
And this quadrilateral is a kite.

Answer 2

being quadrilateral their sum must be 360
I don't know how it is