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In this model the diffusion of English is captured in terms of three concentric circles of the language: the Inner Circle, the Outer Circle, and the Expanding Circle. [21] The Inner Circle refers to English as it originally took shape and was spread across the world in the first diaspora. In this transplantation of English, speakers from ...
The inner circle is observed to slip with respect to its track. The paradox is that the smaller inner circle moves 2πR, the circumference of the larger outer circle with radius R, rather than its own circumference. If the inner circle were rolled separately, it would move 2πr, its own circumference with radius r. The inner circle is not ...
The inner circle (UK, US, etc.) is 'norm-providing'. That means that English language norms are developed in these countries – English is the first language there. [citation needed] The outer circle (mainly New Commonwealth countries) is 'norm-developing'. The expanding circle, which includes much of the rest of the world, is 'norm-dependent ...
Inside-outside circle is a cooperative learning strategy. Students form two concentric circles and take turns on rotation to face new partners to answer or discuss the teacher’s questions. [ 1 ] This method can be used to gather variety of information, generate new ideas and solve problems.
The initial circle C 0 and the final circle C n each contribute 1 / 2 d n to the height h n, whereas the circles C 1 to C n−1 each contribute d n. Adding these contributions together yields the equation h n = nd n. The same inversion can be used to show that the points where the circles of the Pappus chain are tangent to one another ...
An equilateral triangle A bicentric kite A bicentric isosceles trapezoid A regular pentagon. In geometry, a bicentric polygon is a tangential polygon (a polygon all of whose sides are tangent to an inner incircle) which is also cyclic — that is, inscribed in an outer circle that passes through each vertex of the polygon.
The region of the plane between two concentric circles is an annulus, and analogously the region of space between two concentric spheres is a spherical shell. [6] For a given point c in the plane, the set of all circles having c as their center forms a pencil of circles. Each two circles in the pencil are concentric, and have different radii.
The nine-point circle is tangent to the incircle and excircles. In geometry, the nine-point circle is a circle that can be constructed for any given triangle. It is so named because it passes through nine significant concyclic points defined from the triangle. These nine points are: [28] [29] The midpoint of each side of the triangle; The foot ...