Respuesta:
E) 80°
Explicación paso a paso:
2θ + 3θ + θ + 3θ = 180°
9θ = 180°
θ = 180°/9
θ = 20°
m∡BOD = 3θ + θ
m∡BOD = 4θ
m∡BOD = 4(20°)
m∡BOD = 80°
