Question

define the abscissa of a point

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Answer 1

Answer:

The abscissa of a point is the signed measure of its projection on the primary axis, whose absolute value is the distance between the projection and the origin of the axis, and whose sign is given by the location on the projection relative to the origin (before: negative; after: positive).

Answer 2

Answer:

any point in a 2-d plane have two coordinates (x,y)say, so abscissa is x coordinate and y coordinate is called ordinate.