We will use the corners of the parallelogram to denote it, as follows
as the parallelogram
[tex]XYZW[/tex]
that is, we use the corners to denote the parallelogram. Now we will use notation to denote the parallel sides
[tex]\overline{WX}\text{ }\parallel\text{ }{\over }\overline{ZY}[/tex]
and
[tex]\overline{XY}\parallel\text{ }\overline{WZ}[/tex]
Where the line above the letters represent that is a
