Respuesta :

An exterior angle is equal to the sum of the 2 non adjacent angles. In this case

100 = x + 70 Subtract 70
x = 100 - 70
x = 30

we know that

An exterior angle is equal to the sum of the two non adjacent angles

so

In this problem

[tex]100\°=x\°+70\°[/tex]

Solve for x

Subtract  [tex]70\°[/tex] both sides

[tex]x\°+70\°-70\°=100\°-70\°[/tex]

[tex]x\°=30\°[/tex]

therefore

the answer is the option D

[tex]30\°[/tex]