Answer:60
Step-by-step explanation:all sides of the triangle have to be 180 degrees
Answer:
Same for the question user's profile
ANSWER: 118DEGREES
Step-by-step explanation:
3x+11=4x-5
x=6
3(6)+11
29
29*2
59
59*2=118
The formula of a perimeter is:2(L+l) or
2*L+2*l