Find the missing angle

Answer:
105
Step-by-step explanation:
The sum of the opposite interior angles of a triangle is equal to the exterior angle
25+80 = ?
105 = ?
Answer:
105
Step-by-step explanation:
The missing angle is supplementary to the missing inside angle of the triangle shown.
to find the missing angle in the triangle, set up your formula as
180=25+80+x
180-25-80=x
75=x
The missing angle is then 180-75=105