Concentric Circles

Some articles on circle, circles, concentric:

Steiner Chain - Properties Under Inversion
... properties of Steiner chains In an annular Steiner chain, the angle subtended by a single circle is 2θ (gold lines), which is also the angle subtended by adjacent points of ... The gold circles intersect the two given circles at right angles, i.e ... orthogonally The circles passing through the mutual tangent points of the Steiner-chain circles are orthogonal to the two given circles and intersect one another at multiples of the angle 2θ The circles passing ...
Steiner Chain - Annular Case and Feasibility Criterion
... simplest type of Steiner chain is a closed chain of n circles of equal size surrounding an inscribed circle of radius r the chain of circles is itself ... The inscribed and circumscribed given circles are concentric, and the Steiner-chain circles lie in the annulus between them ... By symmetry, the angle 2θ between the centers of the Steiner-chain circles is 360°/n ...

Famous quotes containing the word circles:

    Before the birth of the New Woman the country was not an intellectual desert, as she is apt to suppose. There were teachers of the highest grade, and libraries, and countless circles in our towns and villages of scholarly, leisurely folk, who loved books, and music, and Nature, and lived much apart with them. The mad craze for money, which clutches at our souls to-day as la grippe does at our bodies, was hardly known then.
    Rebecca Harding Davis (1831–1910)