If you can find the slope of both lines, then yes you can tell. The slope for parallel lines is the same - so if your slopes are the same, your lines are parallel. If you are measuring (less exact) the lines will be the same distance apart everywhere.
Parallel is when they are facing the same way eg. | | OR - -
yes
The simplest way is to construct a square which has two pairs of equal opposite parallel lines
If two lines are parallel then the area of the plane between them is symmetrical about its centre-line (parallel to and mid-way between the boundary lines).
parallel is spelled this way and it mean that the lines never intersect
two congruent angles lying on the same side of the transversal and situated the same way on 2 different parallel lines
There are three ways to find if two lines are parallel. The first one is to see if there is any indication. I there isn't, you should never trust your eyes. Instead, you should find the slope of each line. If they are then the two lines are parallel. Another way to find if two lines are parallel is to see if there are any corresponding angles, Alternate Interior Angles, and Alternate Exterior Angles. If there are and they are congruent, then the two lines are parallel.
Skew lines are not parallel. Parallel lines are across from each other in some way and are exactly parallel.
Parallel is when they are facing the same way eg. | | OR - -
Parallel lines are straight lines which are oriented the same way. For example, two railway lines are parallel to each other.
Because of the way parallel lines are defined. Parallel lines never meet, but to qualify as parallel lines, additional conditions may apply. From Wikipedia: "Two lines in a plane that do not intersect or meet are called parallel lines." Emphasis added.
Two lines are parallel if they never cross one another. Another way to tell if they are parallel is if they have the same slope. Also, if the same line intersects both of them at a 90 degree angle, they would be parallel (in other words, if both lines are perpendicular to a common line, they are paraellel).
parallel lines are any lines that will never touch. on a 3D plane, there will be many lines that won't intersect another. but parallel lines have a specific definition that there is no way to subcatigorize it
In Parallel Lines
yes
The simplest way is to construct a square which has two pairs of equal opposite parallel lines
If two lines are parallel then the area of the plane between them is symmetrical about its centre-line (parallel to and mid-way between the boundary lines).