DT Concepts
Published on Jul 18, 2016
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Radius
- In classical geometry, the radius of a circle or sphere is the length of a line segment from its center to its perimeter. The name comes from Latin radius, meaning "ray" but also the spoke of a chariot wheel. The plural of radius can be either radii (from the Latin plural) or the conventional English plural radiuses. The typical abbreviation and mathematic variable name for "radius" is r.
A straight line extending from the center of a circle or sphere to the circumference or surface
Radius
In mathematics, a radius is a segment between the center of a circle to any point on the circle
Diameter
- In geometry, a diameter of a circle is any straight line segment that passes through the center of the circle and whose endpoints lie on the circle. It can also be defined as the longest chord of the circle. Both definitions are also valid for the diameter of a sphere.
A straight line passing through the center of a circle or sphere and meeting the circumference or surface at each end
Diameter
A straight line going through the center of a circle connecting two points on the circumference.
Length
- In geometric measurements, length is the most extended dimension of an object.In the International System of Quantities, length is any quantity with dimension distance. In other contexts "length" is the measured dimension of an object.
Length
Length is any quantity with dimension distance
Perimeter
- A perimeter is a path that surrounds a two-dimensional shape. The word comes from the Greek peri (around) and meter (measure). The term may be used either for the path or its length - it can be thought of as the length of the outline of a shape. The perimeter of a circle or ellipse is called its circumference.
The border or outer boundary of a
two-dimensional figure.
The length of such a boundary.
A line bounding or marking off an area.
Perimeter
Perimeter is the distance around a two-dimensional shape
Bibliography
- http://www.dictionary.com/browse/radius http://www.dictionary.com/browse/diameter http://www.dictionary.com/browse/perimeter
- https://en.wikipedia.org/wiki/Perimeter http://www.mathplanet.com/education/pre-algebra/inequalities-and-one-step-e... https://en.wikipedia.org/wiki/Length https://en.wikipedia.org/wiki/Diameter
Photo by Marcin Wichary
