Question

pleaseeeeeeee.........Help mee..

Answer 1

See, In triangle abc by angle sum property,
angle ACB = 120 degrees.
then, angle ACB and x forms linear pair, therefore x = 60 degrees.
Then by exterior angle property, y = x + 30
so, y = 90 degrees.

Answer 2

Consider the right triangle 
We know that exterior angle = Sum of interior angles
Here x is exterior 30,30 are interior
x= 30+30 = 60 degrees

Consider the left triangle, 
We know that exterior angle = Sum of interior angles
Here, y is exterior. 30,x are interior
y= x+30 = 60 +30 = 90 

so , x = 60 and y=90