Question

Which point represents the vertex of the marked angle?

Answer 1

where is all intersects i think like on a right angle in the corner

Answer 2

no here look at this
https://www.google.com/search?sourceid=chrome-psyapi2&ion=1&espv=2&ie=UTF-8&q=the%20vertex%20of%20an%20angle&oq=the%20vertex%20of%20an%20angle&aqs=chrome..69i57j0l5.7016j0j7

Answer 3

Which point represents the vertex of the marked angle?
A
B
C
D
E