No, they cannot.
gridlines
Non-vertical lines could be slanted or horizontal.
horizantal, vertical,diagnol. horizantal, vertical,diagnol.
columns are the horizantal lines and groups are are the vertical lines
A rectangle has two lines of symmetry, one vertical in the center, and one horizantal in the center
Three vertical or slightly slanted lines, close together.
horizantal communication is a communication which appears peek to peek in an organization
vertical/horizantal
A slanted rectangle, also known as a rhomboid, has no lines of symmetry. Unlike a standard rectangle, which has two lines of symmetry (one vertical and one horizontal), a slanted rectangle lacks any line that can divide it into two identical halves. Thus, it does not possess the reflective symmetry characteristic of standard rectangles.
An oblique line can be diagonal, sloping or slanted. It is not vertical, horizontal, parallel or perpendicular.
Horizontal is the way of the horizon, and vertical is upwards. xx
Whatever it's called, it can't be a parallelogram.