Respuesta:
D = 100 °
c = 140°
B=20°
Explicación paso a paso:
40 +c = 180
c=140
40 +d = 180
D=140
20+ c + b = 180
20+140 +b =180
b= 20
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Verified answer
Respuesta:
D = 100 °
c = 140°
B=20°
Explicación paso a paso:
40 +c = 180
c=140
40 +d = 180
D=140
20+ c + b = 180
20+140 +b =180
b= 20