find the number of sides of an n-gon if the sum of the interior angle is:
a) 1800°
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4
Answer:
12 sides
Step-by-step explanation:
Sum of interior angles = (n-2) × 180°
Given, sum of interior angles = 1800°
=> (n-2) × 180° = 1800°
=> (n-2) = 10
=> n = 10+2
=> n = 12
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