Answer:
7 sides
Step-by-step explanation:
The sum of the interior angles of a polygon is given by the formula
S = (n - 2) * 180°
where n = number of sides
Given S = 900
We get
900 = (n - 2) * 180
Divide both sides by 180:
900/180 - n - 2
5 = n - 2
n = 5 + 2 = 7
Check
(7-2) * 180° = 5 * 180° = 900°
