(mathematics) a pair of irrational numbers whose sum and product are both rational numbers

two complex numbers where the real parts are identical and the imaginary parts have opposite signs, such as "3+2i" and "3-2i"

(mathematics) the complex conjugate of a number, formed by changing the sign of its imaginary part

describing two complex numbers whose real parts are equal and whose imaginary parts are equal in magnitude but opposite in sign

a pair of lines passing through the same vertex of an angle such that they are symmetric with respect to the angle bisector