If the tracks are not parallel, the wheels will not stay on the tracks; train wheels are spaced at a fixed width, or gauge, and that width cannot expand or contract to accommodate non-parallel tracks. Thus, if the tracks were non-parallel, the wheel would come off the track and cause a derailment.
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Railway tracks electrical lines
Railway tracks, the opposite edges of a rule.
parallel?? Parallel is usually used to talk about lines or similar it means they are equal distance apart. For example railway tracks are parallel.
If two circles are drawn using the same centre, the two lines of the circles are parallel as they don't meet each other.Two straight lines (think of railway tracks) are drawn next to each other, but never meet, they are parallel lines.
Real life example of parallel lines are railroad tracks and rows in a garden. Also the lines on a basketball court are parallel