3. Del grafico, calcular "X"
-Geometría-Triángulos.Secundaria
-Geometría-Triángulos.Secundaria
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Verified answer
En los angulos externos te tiene que dar de toda la suma 360° , entonces ...100 + 120 + 60 + x = 360
280 + x = 360
x = 360 - 280
x = 80