Question

PLS PLS ANWSer ASAP ITS GRADED I NEEd at least

Answer 1

The third angle is 60

Explanation:

The interior angle of a triangle is equal to the 180 minus the exterior angle.

`180-80=100`

So one of the interior angles is equal to 100

All of the interior angles of a triangle add up to 180

`180=100+20+x`

`x=60`