Question

If the points A(a, -11), B(5, b), C(2, 15) and D(1, 1) are the vertices of a
parallelogram ABCD, find the values of a and b.

a = 4, b = 4

a = 3, b = 3

a = 4, b = 3

None of these​

Answer 1

Answer:

c) a=4,b=3 is the correct answer