Respuesta :

choixongdong
x + 3x +x + 3x = 360
8x = 360
  x = 45

answer
A) 45

Answer:

45

Step-by-step explanation:

cuz 3 times 45 = 135 double that and that will be 270

then add 45+45= 90

last add 270 + 90 = 360 which is all of the measures inside a quadrilateral

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