Formula for sum of interior angles is (n-2)180. Since there are 7 sides, n-2 is 5.
5 x 180 = 900
Add all the angles given and subtract sum from 900 and you are left with 85 for the missing angle.
Answer from: Quest
5días gucgivuzu 32 horas y horas 6y t7
Answer from: Quest
Use a calculator basically
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