Question

Which statement regarding the interior and exterior angles of a triangle is 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 the remote interior angle.

Answer 1

its A

Explanation:

Answer 2

we know that

the sum of an exterior angle and the adjacent interior angle.of a triangle is equal to 180 degrees, because are supplementary angles

therefore

the answer is the option

An exterior angle is supplementary to the adjacent interior angle.