For triangle XYZ, m∠X = (3g + 19)° and the exterior angle to ∠X measures (6g + 53)°. Find the measure of ∠X and its exterior angle.
Interior angle = 55°; exterior angle = 125°
Interior angle = 125°; exterior angle = 55°
Interior angle = 53°; exterior angle = 121°
Interior angle = 121°; exterior angle = 53°
