How to find parallel position

Hello,

How to find Vector 5 and Vector 6

line of Vector 2 to Vector 5 and Vector 3 to Vector 6 is parallel lines with Vector 1 to Vector 4

have exact coordinates of Vector 1 ,2 ,3 ,4

have angel of vector 1

Vectors is Vector3 in 2D game

Vector6 = Vector4 + (Vector3-Vector1)
Vector5 = Vector4 + (Vector2-Vector1)