The Asymptote
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The square root of -1 is not a real number like -2.5, 0, or 5. Instead, it is and imaginary number, i, and i = the square root of -1. The answer is imaginary because you can never take a real number, square it, and get a negative number. However, i^2 = -1.
Two coplanar lines that never intersect are called called parallel lines.
Straight lines that never cross are called parallel lines.
Looks like all real numbers to me, but then again it could be the intersection of the imaginary numbers and the friendly numbers. You never know with this sort of thing.
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