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Mrs. Miniver's problem – Problem on areas of intersecting circles; Pivot theorem – Concerns 3 circles through triples of points on the vertices and sides of a triangle; Pizza theorem – Equality of areas of a sliced disk; Squaring the circle – Problem of constructing equal-area shapes
Squaring the circle is a problem in geometry first proposed in Greek mathematics.It is the challenge of constructing a square with the area of a given circle by using only a finite number of steps with a compass and straightedge.
There is a procedure involving Carlyle circles for the construction of a regular 65537-gon. However there are practical problems for the implementation of the procedure; for example, it requires the construction of the Carlyle circle for the solution of the quadratic equation x 2 + x − 2 14 = 0. [3]
The most famous of these problems, squaring the circle, otherwise known as the quadrature of the circle, involves constructing a square with the same area as a given circle using only straightedge and compass. Squaring the circle has been proved impossible, as it involves generating a transcendental number, that is, √ π.
There are four such circles in general, the inscribed circle of the triangle formed by the intersection of the three lines, and the three exscribed circles. A general Apollonius problem can be transformed into the simpler problem of circle tangent to one circle and two parallel lines (itself a special case of the LLC special case).
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