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Let O 1 and O 2 be the centers of the two circles, C 1 and C 2 and let r 1 and r 2 be their radii, with r 1 > r 2; in other words, circle C 1 is defined as the larger of the two circles. Two different methods may be used to construct the external and internal tangent lines.
CSS animation of Aristotle's wheel paradox. The wheel comprises two concentric circles: the outer one has twice the radius of the inner one and rolls on the lower track. Both circles and tracks are marked with segments of equal length. The inner circle is observed to slip with respect to its track.
An annulus Illustration of Mamikon's visual calculus method showing that the areas of two annuli with the same chord length are the same regardless of inner and outer radii. [ 1 ] In mathematics , an annulus ( pl. : annuli or annuluses ) is the region between two concentric circles.
If two points A, B of a line a lie in a plane α, then every point of a lies in α. In this case we say: “The line a lies in the plane α,” etc. If two planes α, β have a point A in common, then they have at least a second point B in common. There exist at least four points not lying in a plane. II. Order
A circle packing for a five-vertex planar graph. The circle packing theorem (also known as the Koebe–Andreev–Thurston theorem) describes the possible tangency relations between circles in the plane whose interiors are disjoint. A circle packing is a connected collection of circles (in general, on any Riemann surface) whose interiors are ...
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In trigonometry, the law of tangents or tangent rule [1] is a statement about the relationship between the tangents of two angles of a triangle and the lengths of the opposing sides. In Figure 1, a , b , and c are the lengths of the three sides of the triangle, and α , β , and γ are the angles opposite those three respective sides.
The French “whale” who bet $30 million on a Trump White House win via Polymarket has raked in $48 million in profits on the wager, according to the crypto-based betting platform.