What is m a ?

a. 42

b. 50

c. 58

d. 100

i think its a or c not sure tho

Angle A = 58

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the opposite interior angles

? + 80 = 138

Subtract 80 from each side

? + 80-80 =138 - 80

? = 58

Angle A = 58

is there any photos or whatever?

no association

step-by-step explanation:

if you have eyes and you can use them efficiently you can see that it just looks like random dots like do a line of best fit and like they're so spread out it's such a weak association you might as well consider it nonexistent