The Definition Of Radius Math

The radius of a circle is generally abbreviated as r.

The definition of radius math. The plural form is radii pronounced ray dee eye. The name comes from the latin radius meaning ray but also the spoke of a chariot wheel. Ra di i dē ī or ra di us es. Plural radii rā dē ī or radiuses 1.

Definition of radius radius is the distance from the center of a circle or a sphere to any point on the circle or a sphere. The typical abbreviation and mathematical variable name for radius is r. A line segment that joins the center of a sphere with any point on its surface. By extension the diameter d is defined as twice the radius.

Any radial or radiating part. The plural of radius can be either radii or the conventional english plural radiuses. A straight line from the center to the circumference of a circle or sphere. The radius of a circle is the length of the line from the center to any point on its edge.

A straight line extending from the center of a circle or sphere to the circumference or surface. Sometimes the word radius is used to refer to the line itself. In the figure above drag the orange dot around and see that the radius is always constant at any point on the circle. The radius of a circle is half the diameter.

D 2 r r d. A line segment that joins the center of a circle or sphere with any point on the circumference of the circle or the surface of the sphere. Definition of a radius the definition of radius of a circle is the length of the line segment from the center of a circle to a point on the circumference of the circle. It is half the length of the diameter.

The length of such a line. How to use radius in a sentence. Radius definition is a line segment extending from the center of a circle or sphere to the circumference or bounding surface. In other words radius is a line segment joining the center of a circle with any point on the circle.

It is half of the circle s diameter. In classical geometry a radius of a circle or sphere is any of the line segments from its center to its perimeter and in more modern usage it is also their length.