i need help with the two missing blanks...which answer goes in the first and last box?

lets start by graph the first vector and the given one:
In this case the angle is:
[tex]135^{\circ}=\frac{3\pi}{4}[/tex]And for the last one:
[tex]270^{\circ}=\frac{6\pi}{4}=\frac{3\pi}{2}[/tex]