Given vector v=⟨−1,−2⟩ find -6v

if i did my math right then the answer should but 108

the angles measure to 70 degrees, 70 degrees, 20 degrees, and 20 degrees

i think the best answer to it is letter d. 90degrees because the p is the point of rotation by 90 degree so it means when c' is form the vertex is p and the angle that is formed by the 2 sides is 90. i hope you are satisfied with my answer and feel free to ask for more.