Answer:
Therefore the correct option is 2. 35 degree.
[tex]\angle ABC=\angle ACB=35\°[/tex]
Step-by-step explanation:
Consider an Isosceles Triangle, Δ ABC where,
∠BAC = 110°
TO Find:
∠ ABC = ∠ACB = ?
Solution:
For an Isosceles Triangle
Base Angles are equal
∴[tex]\angle ABC=\angle ACB=x\ (say)[/tex]
Now,
Triangle sum property:
In a Triangle sum of the measures of all the angles of a triangle is 180°.
[tex]\angle A+\angle B+\angle C=180\\\\110+x+x=180\\\therefore 2x=180-110=70\\\therefore x=\dfrac{70}{2}=35\°[/tex]
Therefore,
[tex]\angle ABC=\angle ACB=35\°[/tex]
