Points A(-2, 4), B(1,3), C(4,-1) and D form a parallelogram. What are the coordinates of D. O A (5, 5)
OB. (0, 0)
OC: (1, -2)
D(1, 0)
O E. (3, 4)

“exterior angles of triangles. an exterior (or external) angle is the angle between one side of a triangle and the extension of an adjacent side. try this drag the orange dots on any vertex to reshape the triangle.” look to get to the answer i explained what it means and other things i hope it you .

Yea they are simplyfiy the ratios

Ithink the answer is d.