Three angles of a 7 sided polygon are 130° each, and the remaining four angles are equal. The value of each equal angle is
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1. Answer:

   102 degrees

   Step-by-step explanation:

   total internal angle of a 7 sided polygon = 7-2 * 180 = 5 * 180 = 900 degrees

   let the other 4 angle be x

   now,

   130 + 130 + 130 + x + x + x + x = 900

   5x + 130 + 130 + 130 = 900

   5x = 900 – (130+130+130)

   5x = 900 – 390 = 510

   x = 510/5 = 102

   x = 102 degrees

   thus, the other angles are 102 degrees each (which is not in the option)

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