Respuesta:
20
Explicación paso a paso:
angulo exterior :
3x+80=140
3x=140-80
3x=60
x=60/3
x=20
HOLA
180–140 = 40
3x + 80 + 40 = 180°
3x = 180° – 120°
3x = 180° – 120°3x = 60°
3x = 180° – 120°3x = 60°x= ⁶⁰/3
x = 20° Respuesta
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Verified answer
Respuesta:
20
Explicación paso a paso:
angulo exterior :
3x+80=140
3x=140-80
3x=60
x=60/3
x=20
HOLA
180–140 = 40
3x + 80 + 40 = 180°
3x + 120 = 180°
3x = 180° – 120°
3x = 180° – 120°3x = 60°
3x = 180° – 120°3x = 60°x= ⁶⁰/3
x = 20° Respuesta