Question

calcule as medidas dos três ângulos internos sendo a+b+c=180°,a=40°,b=3×,c=×

Answer 1

180=A+B+C

180= 40+3X+X

180-40 +3X+X

120=3X+X

120=4X

120 dividido por 4 igual a 35

x=35   A=40 B=105 C=35