# circumradius

## circumradius

[¦sər·kəm′rād·ē·əs]
(mathematics)
The radius of a circle that is circumscribed about a polygon.
References in periodicals archive ?
1 the arithmetic average is shown--the dotted polygon, and the circumradius of the Surface Measurement
In this paper, we propose a bound based on the function values at the vertices and the circumradius of an n-circumsphere.
d] and it has inradius r = 1/d and circumradius R = 1/[square root of d].
For example, he introduced the letter e to represent the base of the system of natural logarithms; the use of the Greek letter [pi] for the ratio of circumference to diameter in a circle also is largely due to Euler; the symbol i for [square root of -1]; the use of the small letters a, b and c for the sides of a triangle and of the corresponding capitals A, B and C for the opposite angles stems from Euler, as does the application of the letters r, R and s for the inradius, circumradius and semiperimeter of the triangle respectively; the designation lx for logarithm of x; the use of [SIGMA] to indicate a summation; and, perhaps most important of all, the notation f(x) for a function of x are all due to Euler.
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