A closed interval is a set that includes both endpoints. It represents a range of values that starts at one point and ends at another, including those points.
Related terms
Open Interval: An open interval is a set that does not include its endpoints. It represents a range of values that starts after one point and ends before another.
Half-Open Interval: A half-open interval is a set that includes one endpoint but not the other. It represents a range of values that starts at one point but does not include the other.
Bounded Interval: A bounded interval is an interval where both endpoints exist and are finite. It represents a finite range of values between two specific points.