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please help and answer fast please and thank u ill give 20 points

Please Help And Answer Fast Please And Thank U Ill Give 20 Points class=

Sagot :

Answer:

number of sides: 18 sides

Explanation:

                        Total Interior angle = ( n - 2 ) * 180°

Using the formula:

2880° = ( n - 2) * 180°

n - 2 = 16

n = 16 + 2

n = 18 sides