Question

what is the value of x?​

Answer 1

Answer:

71° + x° = 128° .........exterior angle

x = 128 - 71

x = 57°

Answer 2

Step-by-step explanation:

the answer is as follows

57°

exterior angle property suggest ,An exterior angle of a triangle is equal to the sum of the opposite interior angles

the answer we get by

128°-71°=57°

if you want to check the answer -: (71°+57°=128°)✓ this verified

hope it helps