Heights of the inner parallelogram

Question

From the quadrilateral below, it says 'ρ1 and ρ2, are the heights of the inner parallelogram.

What is the description/definition of height in this case? Thanks...

Answer 1

Apparently by a "height" they mean "perpendicular distance from a vertex to a side". Others call this an "altitude" (not "attitude"). But I don't think it is standard convention.

Answer 2

The hieght of a parallelogram $ABCD$ wrt. a side $AB$ is the value $x$ such that $$ S_{ABCD} = x \cdot AB$$