Respuesta :

First,you have to know that the Total ° of a triangle is 180°.

So first you do: 40+70 and minus the sum from 180.

110 - 180 = 70°

ANS: 70°
so 1 do 40+70=180 
110-180=70 
so the anwser is 70 
hope it helps and good luck

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