Please help

1. ABCD is a parallelogram, and PD = DA). a. Determine which vectors (if any) are equal to AB. BA, AD. CB, and AP. b. Explain why PD = BC|. 2. The diagram below represents a rectangular prism. State a single vector equal to each of the following. W R a. RQ + RS c. PW + WS e. PW - VP b. RO + QV d. (RO + RS) + VU f. PW + WR + RQ 3. Two vectors, a and b, have a common starting point with an angle of 120 between them. The vectors are such that a = 3 and b) = 4. a. Calculate a + b). h. Calculate the angle between a and a + b. 4. Determine all possible values for : if the length of the vector ] = D' is 4ly]. 5. PORS is a quadrilateral where A. B, C, and D are the midpoints of SP. PQ. QR, and RS, respectively. Prove, using vector methods, that ABCD is a parallelogram