Lines with equal slopes are parallel, because they are going the same direction. If the slope and the intercept are the same, the lines are coinciding, because they are on top of each other.
Biceps are the top part of your upperarm, your Triceps are the bottom part of your upperarm
They are called lines
The lines for depression are called hachured lines
The lines are called perpendicular lines.
Top one, closest to your fingers is the heart line. below it is the head line and the last one,(curved around thumb) is the life line.
When they go from the top, then down.
fingerings...
The imaginary line that runs through Greenwich, England is called Prime Meridian. Lines of Latitude encircle the globe horizantally (with the north pole at the top) Lines of Longitude are the vertical lines (with the north pole ar the top)
These are called phalanges. Fingers have phalanges and nails.
You probably mean header and footer.
Lines added to the stave when notes are below or above the top of the stave are called "ledger lines" or "leger lines". They can occur in any stave indicating an instrument with melody.
The area is called the philcrum. The pit in the middle of the philtrum is called the sulcus. The two ridges (lines as you say) are called the philtral rdiges. The philtrum joins the nose at the area called the columella. The philtrum joins the lip at the place called the tubercle.
Because you eat them with your fingers
means the lines on your fingers and how they are lined up
phalanges
== == 0 put top three fingers down and top two fingers on the bottom three at the top (left hand) top two on the right hand