Question

find x in the following figure ​

Answer 1

Answer:

75+40+x=180(angle sum property)

115+x=180

x=180-115

x=65

Answer 2

Answer:

sum of angle of triangle=(n-2)*180°=180°

so

=> x°+70°+40°=180°

=> x = 180°-70°-40°

=> x= 70°