Question

determine o valor de x nos triangulos cujos angulos internos medem:
0
a)100 ,2x,2x

o. o
b)3x+10. ,2x,20

o
c)x+30 ,x,3x

Answer 1

a)100 + 2x+2x = 180
   4x = 80 ---> x = 20

b)3x+10 +2x +20 = 180
    5x = 150 ----> x = 30

c) x+30 +x +3x = 180
    5x = 150 ---> x = 30