No,but is a parrallogram in which adjacent sides are of unequal lengths and angles are oblique
the middle part of your back
Yes.
Choose one corner of the rhomboid as the origin and the three edges joined at this corner as the principle axes (say, A, B, and C). Consider each as a vector with a direction along the axis with a...
A parallelogram in which angles are oblique and adjacent sides are of unequal length.