Condition for Points in Complex Plane to form Parallelogram/Examples

Examples of Condition for Points in Complex Plane to form Parallelogram

$2 + i$, $3 + 2 i$, $2 + 3 i$, $1 + 2 i$ form Square

The points in the complex plane represented by the complex numbers:

$2 + i, 3 + 2 i, 2 + 3 i, 1 + 2 i$

are the vertices of a square.