Please help me answer this question

1. (a) (Strang 1.1.9) If three corners of a parallelogram are (1,1), (4,2) and (1,3), what are all possible locations of the fourth corner? Support each answer with a sketch of the parallelogram on the my plane. (b) (Strang 1.1.27) How many corners does a (hyper)cube in 4 dimensions have? How many edges? How many faces? Hint: A square in 2-D can be dened by the four corner points: (0,0), (0,1), (1,0) and (1,1); each corner is connected to two edges and one face, but each edge has two corners, while each face has four. This gives (4 corners)>