Comment When an exterior angle is given, its complement can the found with the following formula.
Exterior angle + the supplement interior angle = 180 Because the exterior angle is given, we can find the base angles and later on the apex angle.
Solution 125 + x = 180 Subtract 120 x = 180 - 125 x = 55
The other base angle = 55 A triangle has 180 degrees 55 + 55 + apex angle = 180 110 + apex angle = 180 apex angle = 180 - 110 apex angle = 70 <<<<< Answer. I'm not getting any of those. This is not ASAP. If you've put in something wrong let me know.
