Children
there are two pairs of parrell lines in a trapizoid, the top line and bottom line. I hope I answered your question!!=)=)
Four pairs, which intersect at the four vertices!
NoneOctagon hasn't got any pairs of parallel line
The coordinates of the corners of a polygon, the locus of curves, and many many other possibilities. In fact, ordered pairs that form a line are the exceptions.
Children
Crocodile
The pairs of individuals who have children in the pedigree are the ones connected by a horizontal line with offspring below them.
A receding hare line
They could be the coordinates of a straight line on the Cartesian plane
A cube has six pairs of intersecting line segments. These six pairs will total 72 lines in a cube.
Walking on a Thin Line was created in 301.
None of "these" pairs.
the proposal
how many pairs of parallel line segments does a stop sigh have
the proposal
there are two pairs of parrell lines in a trapizoid, the top line and bottom line. I hope I answered your question!!=)=)