A polygon has an interior angle sum of 9000. How many sides does it have

52

Step-by-step explanation:

The sum of the interior angles of a polygon is

sum = 180° (n - 2) ← n is the number of sides

Here the sum = 9000°, thus

180° (n - 2) = 9000° (divide both sides by 180°)

n - 2 = 50 (add 2 to both sides)

n = 52