Question

Find the value x and write the property used here.

Answer 1

x = 110°

Explanation:

Exterior angle property states that the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles, that is

x = 45° + 65° = 110°

Answer 2

Explanation:

Soln,

Here,

45°+65°+y(let)=180°[ being a triangle]

or,110°+y=180°

or,y=180°-110°

so,y=70°

Now,

x=?

so,

x+y=180°[being straight angle]

or,x+70°=180°

or,x=180°-70°

x=110°

THEREFORE,x=110°

solved!