What is a chord in a circle?

A chord in a circle is defined as a line segment that connects two points on the circumference of the circle. This concept is foundational in understanding the properties of circles, as it helps explore relationships between various elements, such as the radius, diameter, and various theorems related to angles and arcs.

In contrast, other options present different geometric definitions that do not accurately describe a chord. For example, a line segment that passes through the center of the circle is specifically known as a diameter, which is a special type of chord that is the longest possible in the circle. A point inside the circle represents a location that does not define a line segment, while the distance around the circle refers to the circumference, which is a separate concept from the characteristics of chords. Understanding the definition and properties of a chord is vital for further exploration of geometry and its applications.