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Sum of all interior angles of a polygon
180( n - 2) where n = number of sides in the polygon
now, if n = 19, the polygon has 19 sides, then 180( 19 - 2)
Answer:
9
Step-by-step explanation:
Answer:
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Step-by-step explanation:
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We aer goint to eliminate the x's
multiply first by -5 and 2nd by 2
so that is B