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Two lines that will never meet are parallel lines. Parallel lines are two lines that are always the same distance apart and will never intersect, no matter how far they are extended. This property is a fundamental concept in geometry and is defined by having the same slope but different y-intercepts.
if u mean height wise about 1000 feet
Oh, dude, adjacent lines are like the neighbors of geometry. They just chill next to each other, but they don't necessarily run parallel. So, nah, adjacent lines don't have to be parallel. It's like saying just because you live next to someone, you must be best friends.
That depends on how well supported the floor is and that depends on how far apart the joists are placed. The closer they are, the more weight can be supported.
Euclid's fifth postulate: If two lines are drawn which intersect a third in such a way that the sum of the inner angles on one side is less than two right angles, then the two lines inevitably must intersect each other on that side if extended far enough.It can be rewritten: If two lines are drawn which intersect a third at angles of 90 degrees, the two lines are parallel and will not intersect each other.It has also been rewritten as Playfair's axiom:In a plane, given a line and a point not on it, at most one line parallel to the given line can be drawn through the point.