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Reverted 1 edit by 67.194.71.138 (talk): Lines need not be straight... They are curved, too. (HG) |
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== Formula and proof ==
Because the lines are parallel, the perpendicular distance between them is a constant, so it does not matter which point is chosen to measure the distance. Given the equations of two non-vertical parallel lines
:<math>y = mx+b_1\,</math>
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