perpendicular.
meridians or lines of longitude
parallel lines
rope lines
parallel lines
Vertically opposite.
perpendicular.
When two pieces of fabric are sewn together a seam is formed.
echo
meridians or lines of longitude
The "ring of fire".
intersecting lines
If the question means, "What do you call the point where two lines cross?" The answer would be "intersection". Otherwise, I would call them 2 intersecting lines.
Light travels in straight lines that we call rays.
It is called a quatrain
parallel lines
you call intersecting lines that meet, just intersecting lines yolanda