In a circle, what term is used for the line segment from the center to any point on the circle?

In a circle, what term is used for the line segment from the center to any point on the circle?

• A. Diameter
• B. Radius
• C. Chord
• D. Arc

Answer: (B)

The line segment from the center to a point on the circle is called a radius. This segment defines the distance from the center to the boundary, and all such segments have the same length because every point on the circle is equally distant from the center. If you extend a radius straight through the center to the opposite side, you get a diameter, which is two radii in a line. A chord is any segment with both endpoints on the circle (not necessarily through the center), and an arc is a curved portion of the circle’s edge, not a straight segment. So the segment from the center to the circle is exactly a radius.

The line segment from the center to a point on the circle is called a radius. This segment defines the distance from the center to the boundary, and all such segments have the same length because every point on the circle is equally distant from the center. If you extend a radius straight through the center to the opposite side, you get a diameter, which is two radii in a line. A chord is any segment with both endpoints on the circle (not necessarily through the center), and an arc is a curved portion of the circle’s edge, not a straight segment. So the segment from the center to the circle is exactly a radius.