![]() ![]() These lines tend to meet each other at infinity. The lines printed on a ruled paper are equidistant from each other. One can easily observe the existence of parallel lines in real life by looking at such markings on the road. These markings include road shoulder line, centre line marking, kerb marking, traffic lane marking, etc. Road markings are necessary to enhance safety and security while driving. These white stripes are clearly parallel to each other. Racing tracks that are properly marked with broad white stripes of paint or powder constitute one of the best examples of parallel lines in real life. Hence, the electrical wires placed between the powerhouse and the homes constitute a perfect example of parallel lines in real life. The wires are separated from each other at a distance and are parallel to each other. These wires can be easily seen along the roadside. The electrical power generated by the powerhouse reaches our homes with the help of the wires attached to the electricity poles. All the three stumps of a wicket, namely the off stump, middle stump, and leg stump, are placed at equal distances and are parallel to each other. One of the prominent examples of parallel lines is the cricket stumps. These white stripes are parallel to each other. Hence, both the opposite sides of the ruler are parallel to each other.Ī pedestrian crossing or a zebra crossing is a portion of the road that is painted with white stripes. ![]() If a line is traced along one side of the ruler and another line is drawn using the opposite side, the resultant lines will be parallel to each other. In a similar manner, the sleepers are also placed parallel to each other.Ī ruler is used to draw straight lines and other figures. The iron bars that make up the tracks are laid parallel to each other. ![]() If you are looking for a real-life application of parallel lines, you must closely observe the railway tracks. The sum of the pair of interior angles on the same side of the transversal is supplementary or is equal to 180°.Įxamples of Parallel Lines 1.The alternate exterior angles are equal.The alternate interior angles are equal.The vertically opposite angles so formed are equal.The resultant corresponding angles are equal.When a transversal line intersects or cuts two parallel lines: Parallel lines are equidistant from each other.Ĥ. The slopes of two parallel lines are equal.ģ. Two lines parallel to each other represent a pair of linear equations in two variables that do not possess a consistent solution.Ģ. Projective geometry is another very useful but more complex way to do this.1. ![]() So "parallel" does strictly mean two lines that do not meet, but there are ways to eliminate the concept with a suitable geometry. Second, it unifies the treatment of lines and circles: everything is now a circle, in effect. First, it elminates parallel lines: now every two lines intersect in a point, and every two points define a line (exercise!). Spherical geometry regularizes plane geometry in several ways. Note then that two lines always intersect in a "point" (which in spherical geometry is defined as the two points opposite each other on the sphere). The "lines" in spherical geometry are the "great circles": the circles which have the diameter of the sphere. For example, spherical geometry takes place on the surface of a sphere. These settings help regularize the geometry. What some people are trying to point out as examples are situations where lines cannot be parallel. As Daniel Rust notes, the definition of parallel is that two lines don't meet. ![]()
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