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Scorpion gulch & western railway is preparing to build a new line through rolling mountains. they have hired you to do some calculations for tunnels and bridges needed on the line. you set up a cartesian coordinate system with

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Kalahira
A Cartesian coordinate system is a coordinate system that specifies each point uniquely in a plane by a pair of numerical coordinates, which are the signed distances to the point from two fixed perpendicular directed lines, measured in the same unit of length. This can be used to build a new line through mountains.

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