vivianagonzales530 vivianagonzales530
  • 23-07-2021
  • Mathematics
contestada

Geometria ayuda por favor

Geometria ayuda por favor class=

Respuesta :

mathstudent55
mathstudent55 mathstudent55
  • 23-07-2021

Answer:

72°

Step-by-step explanation:

Para el pentagono ABCDE,

m<C = (n - 2)(180)/n = (3)(180)/5 = 108

m<D = m<C = 108

Para el quadrilatero BCDE,

m<CBE + m<C + m<D + m<DEB = (n - 2)180 = 2(180) = 360

m<C = m<D = 108

m<CBE = m<DEB = x

m<CBE + m<C + m<D + m<DEB = 360

x + 108 + 108 + x = 360

2x + 216 = 360

x + 108 = 180

x = 72

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