Otherwise nobody would know what was meant by parallel lines!
You can't... A rectangle is defined by 2 sets of parallel lines, ans a parallelogram has 1+ sets of parallel lines
A circle does not have a set of parallel lines in the traditional sense, as parallel lines are defined as lines that never intersect and remain equidistant from each other. However, you can draw lines that are tangent to a circle at various points, and these tangent lines can be parallel if they are at the same distance from the center of the circle. But in the context of the circle itself, it does not contain parallel lines.
Yes, it is true that two lines that lie in different parallel planes must be skew lines. Skew lines are defined as lines that are not parallel and do not intersect, and since the lines in different parallel planes cannot meet or be parallel to each other, they fit this definition. Therefore, they are considered skew lines.
On a global grid, lines that are not parallel include the lines of longitude, or meridians, which converge at the poles, and the lines of latitude, or parallels, which remain equidistant from each other. While lines of latitude are parallel to one another, the lines of longitude intersect at the poles and are therefore not parallel. This difference results in a spherical geometry where the spatial relationships between these lines are defined by the curvature of the Earth.
The undefined term that can contain parallel lines is "plane." In geometry, a plane is a flat, two-dimensional surface that extends infinitely in all directions. Within a plane, parallel lines are defined as lines that never intersect and are always the same distance apart. Thus, a plane can accommodate multiple sets of parallel lines.
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.
The slopes will be the same. It is also possible that both parallel lines have no slope defined - if they are vertical.
When the lines of action of all the forces are not parallel to each other is defined as non parallel forces
You can't... A rectangle is defined by 2 sets of parallel lines, ans a parallelogram has 1+ sets of parallel lines
because they never intersect
No, parallel lines never intersect, so they do not have any points in common. Intersecting lines have one common point.
When the lines of action of all the forces are not parallel to each other is defined as non parallel forces
A circle does not have a set of parallel lines in the traditional sense, as parallel lines are defined as lines that never intersect and remain equidistant from each other. However, you can draw lines that are tangent to a circle at various points, and these tangent lines can be parallel if they are at the same distance from the center of the circle. But in the context of the circle itself, it does not contain parallel lines.
The undefined term that can contain parallel lines is "plane." In geometry, a plane is a flat, two-dimensional surface that extends infinitely in all directions. Within a plane, parallel lines are defined as lines that never intersect and are always the same distance apart. Thus, a plane can accommodate multiple sets of parallel lines.
Since a quadrilateral is a defined as any object with two sets of two parallel lines that form four 90 degree right angles. It would have 2 sets of 2 parallel lines.
They are parallel lines
No, parallel lines are defined as always being the same distance away from each other, or having the same slope.