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A conformal map is a transformation of a graph that does not change angles between intersecting curves. For example, a conformal map of the x-y coordinate system could have curved x and y axes, but the angle between them would have to remain ninety degrees.
 
A conformal map is a transformation of a graph that does not change angles between intersecting curves. For example, a conformal map of the x-y coordinate system could have curved x and y axes, but the angle between them would have to remain ninety degrees.
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A Mercator projection is a conformal map.