Veterans with health insurance may choose to use their private health insurance to supplement their VA benefits. Payments from private health insurance usually cover copay expenses for VA health care. Having private health insurance does not affect eligibility for VA health care.
If the shape is below another, then it is always the shape above it as well. So a rhombus is always a parallelogram, a square is always a rectangle, and always a parallelogram, and always a quadrilateral, etc. If I could draw the arrows in this reply it would look better.
The definition of a rectangle is a four-sided figure with four 90-degree angles and lines that are either two different lengths (two lines same length, other two lines same size), or all the lines are the same length (a square). A rhombus has four sides that are the same length with no restriction on its angles.