Question 814987

In a triangle, when left side and right side are congruent, then, that triangle is a isosceles triangle. So, as per the properties, the angles opposite to the congruent sides are also congruent.  So, x = 35 degrees as left corner = 35 degrees.  
The sum of the angles of a triangle = 180 degrees.
So, the bottom angles + top angle = 180 degrees.
i.e. 35 + 35 + y = 180 degrees.  i.e. 70 + Y = 180 degrees.
Therefore, y = 180-70 degrees.  i.e. y = 110 degrees.  

I hope it is clear to you.  All the best.  Feel free to contact me at gsmani9@yahoo.com.