The boundary or perimeter of a circle is its circumference.
It is an "open" circle. That is, a circle which is not filled in.
The circumference of an object - particularly a circle - is the distance around the outside of it.
Not sure about the circumfrince. The circumference of a circle is the boundary of the circle and its length is pi*d where d is the diameter if the circle, and pi is the irrational number that is approximately equal to 3.14159
A circle in which the distance from its centre to its boundary is 32 inches.
A diameter - provided it meets the boundary of the circle or sphere on opposite sides.
The diameter of a circle is a straight line going from one point on its boundary, through the centre of the circle, to the boundary on the other side.
The boundary or perimeter of a circle is called the circumference. The formula for calculating the length of the circumference is C = 2πr.
Delaware has a boundary that is a curve (part of a circle). The arc radius is 12 miles. By default, the adjoining State of Pennsylvania also has a curved boundary.
The part of the circumference of a circle is called an "arc." An arc is defined as a segment of the circle's boundary, formed between two points on the circle. The length of an arc can vary depending on the angle subtended at the center of the circle.
Approximately 66° 33' 39" N marks the boundary of the Arctic Circle
Circumfrence
its called a Radius
The curved line that traces the boundary or perimeter of a circle is called the circumference. A straight line that touches the circle at just one point is called a tangent. See the related link, 'The Parts of the Circle', below this answer.
The Antarctic Circle
Not at all! The circumference is the length of the boundary of a circle. A chord is a straight line(or a line segment) that passes through two points on the boundary of a circle (or on a curve).
It is an "open" circle. That is, a circle which is not filled in.
The radius of a circle is a line segment joining any point of the boundary of the circle to its centre. A diameter is a line segment from a point of the boundary of the circle which passes through the centre and ends at the boundary on the opposite side.