This term and many others, such as equations or axes, are all fundamental and key concepts in what is called analytical geometry. The so-called abscissa axis represents the horizontal coordinate axis. Surfaces: r - spheres, θ - cones, φ - half-planes Lines: r - straight beams, θ - vertical semicircles, φ - horizontal circles Axes: r - straight beams, θ - tangents to vertical semicircles, φ - tangents to horizontal circlesįor now, consider 3-D space.It is known as abscissa (word derived from the Latin abscissa, "cut") to a coordinate of horizontal direction that appears in a rectangular Cartesian plane and that is expressed as the distance that exists between a point and the vertical axis. 2 - Coordinate surfaces, coordinate lines, and coordinate axes of spherical coordinates. Orthogonal curvilinear coordinates in 3 dimensions Coordinates, basis, and vectors įig.
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