Question

find x
please please​

Answer 1

Answer:

70 is the correct answer

Step-by-step explanation:

both side are equal then angles are also equal then sum of all angle then calculate this and you get you answer

Answer 2

Answer:

lets consider the 40° angle as the vertex angle

there is this property that says an isosceles triangle has 2 equal sides, and the angle at the vertices opposite to both the sides are also equal

let us call both the angles x(because they are equal)

we know that

sum of angles of a triangle is 180°

so, 40° + x + x = 180°

⇒ 40° + 2x = 180°

⇒2x = 180° - 40°

⇒2x = 140°

⇒x = 140°/2

⇒x = 70°