Question

what is the value of 'a' in this diagram ⬆️​

Answer 1

Answer:

55

Step-by-step explanation:

because the interior and the exterior angle of the opposite sides are equal

Answer 2

Step-by-step explanation:

a=55 and vertically opposite angles are equal

because sum of three angles in a triangle was 180

70+55+a=180

125+a=180

a=180-125

a=55