Answer:
The answer is
7 sides
Explanation:
The sum of interior angles(s) of a polygon can be found by using the formula
s = (n - 2) × 180
Where n is the number of sides of the polygon
From the question
s = 900°
Substitute this value into the above formula and solve for n
That's
Divide both sides by 180
We have the final answer as
n = 7
Therefore the polygon has 7 sides
Hope this helps you