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# Introduction to Coordinate Geometry

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 Sub Topics Coordinate Geometry or the system of coordinate geometry has been derived from the correspondence of the points on the number line and real number. A very unique number coordinate can be represented on a number line and any of the real number can be located on the number line. The number line represents the whole of the real number. By the way of the convection the number line is a horizontal placed line at its right hand side the positive Numbers are placed and on the left hand side the negative number are placed and they both are separated by the 0 or we can say zero is placed in the middle of them. On the vertical axis another number line is created here negative coordinates are below the horizontal line and the positive coordinates are above the horizontal line this system of representing a number line creates a Rectangular Coordinate System. Any Point on a plane is represented by two coordinates which is distance from the x-axis and the distance from the y-axis. Suppose we have a coordinate (3, 5), in this is 3 is represented on x- axis which means 3 units away from origin and 5 is represented on y- axis which means 5 units away from origin. The introduction coordinate geometry or the coordinate system helped the mathematicians to explore Algebra and geometry. The presentation of points, lines, curve, and the various other geometric drawing and construction became easy because of coordinate geometry. Among one of the important applications of coordinate system is the mapping of earth into latitudes and longitudes. It is believed that the first mapping of longitudes and latitudes was propounded by the “Amerigo Vespucci”. Another practical application is in field of computers and television screen which is invention of the pixels. This is all about introduction to coordinate geometry.