Question

I need help finding the missing angle with work plz
ANSWER ASAP!!!!!!

Answer 1

The unknown angle is 80

Explanation:

The sum of the angles of a triangle add to 180 degrees

Let the unknown angle be x

20+80+x = 180

Add like terms

100+x = 180

Subtract 100 from each side

100-100+x=180-100

x = 80