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.
Also ever square is a rhombus, but not every rhombus is a square. A rectangle is a four-sided figure with four right angles. A rhombus is a four-sided figure with four equal length sides. A square is a four-sided figure with equal sides and four right angles.