Question

which statement regarding the interior and exterior angles of a triangle is always true? an exterior angle is supplementary to the adjacent interior angle. an adjacent interior angle is supplementary to a remote interior angle. a remote interior angle is congruent to the exterior angle. an exterior angle is supplementary to a remote interior angle.

Explanation:

An exterior angle of a triangle and its adjacent interior angle form a linear pair, meaning their sum is 180° (supplementary). Other options are incorrect: adjacent interior angles are not supplementary to remote ones, remote interior angles are equal to the sum (not congruent) of exterior angles, and exterior angles are not supplementary to remote interior angles.

Answer:

A. An exterior angle is supplementary to the adjacent interior angle.