Argument the angle measured from the positive x-axis to the segment joining the origin and the point representing the graph of complex number c.Īugmented matrix a matrix containing more than simply coefficients it may contain a column of solutions or even an appended identity matrix, as in the method of calculating inverse matrices.Īxis of symmetry the line passing through the vertex of a parabola about which the graph of the parabola is symmetric.Ĭenter (of a circle) the point from which all points on a given circle are equidistant.Ĭenter (of an ellipse) the midpoint of an ellipse's major axis.Ĭenter (of a hyperbola) the midpoint of the transverse axis.Ĭircle a set of coplanar points equidistant from a fixed point called the center.Ĭoefficient matrix a matrix whose entries are the coefficients for a system of equations.
