imaginaria

In a sentence

• El amigo imaginario de los niños suele ser un reflejo de su creatividad.

  Children's imaginary friend is often a reflection of their creativity.

  In this sentence, 'imaginario' pertains to something created in the imagination and not existing in the real world, illustrating its use as an adjective for describing concepts originating in thought.

• En las matemáticas, usaron números imaginarios para resolver el problema.

  In mathematics, they used imaginary numbers to solve the problem.

  In this context, 'imaginario' refers to abstract mathematical entities used in calculations and equations, again functioning as an adjective to specify a type of number.

• Durante el ejercicio militar se formó una línea imaginaria para dividir los territorios.

  During the military exercise, an imaginary line was drawn to divide the territories.

  Here, 'imaginaria' describes a conceptual boundary envisioned rather than physically present, showing its application in hypothetical or strategic contexts.