Question

Determine a medida de cada ângulo do triângulo abaixo:

Answer 1

3x+3x-10+3x+10=180
3x+3x+3x=180+10-10
9x=180
x=20

Angulo A=60

AnguloB=50

Angulo C=70

Answer 2

3 x - 10 + 3 x + 3 x + 10 = 180
9 x = 180
x = 180/9
x = 20

3 x - 10 = 
3.20 - 10 = 
60 - 10 = 50

3 x + 10 = 
3 . 20 + 10 = 
60 + 10 = 70

3 . 20 = 60
ESSES ÃNGULOS MEDEM 50 ; 60  ; 70