chrisponeaugust chrisponeaugust
  • 08-02-2021
  • Mathematics
contestada

what is the answer for this

what is the answer for this class=

Respuesta :

devishri1977
devishri1977 devishri1977
  • 08-02-2021

Answer:

∠B = 141

Step-by-step explanation:

n - > number of sides

n = 7

Sum of all interior angles = (n -2 ) * 180

                                         = 5 * 180 = 900

∠B + 148 + 90 + 142 +  130 + 129 + 120 = 900

∠B  + 759 = 900

∠B = 900 - 759 = 141

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