Question

Pls solve question no.8

Answer 1

let the two equal angles be x .
so the third angle=18+x
sum of angles of a triangle=180
x+x+18+x=180
x=60-6
x=54
done.
angles are 54 54 and 72.

Answer 2

Let the first angle be x
second angle also be x
third angle be x+x+18
according to question
x+x+(x+x+18+18)=180(by angle sum property)
2x+2x+36=180
4x=180-36
4x=144
x=36
now, first angle =second angle =x=36
and third angle =x+x+18+18=36+36+18+18=108
hope it's helpfull