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Some examples of theorem configuration changing the radius of the first circle. In the last configuration the circles are pairwise coincident. In geometry, the six circles theorem relates to a chain of six circles together with a triangle, such that each circle is tangent to two sides of the triangle and also to the preceding circle in the ...
Draw three circumcircles (Miquel's circles) to triangles AB´C´, A´BC´, and A´B´C. Miquel's theorem states that these circles intersect in a single point M, called the Miquel point. In addition, the three angles MA´B, MB´C and MC´A (green in the diagram) are all equal, as are the three supplementary angles MA´C, MB´A and MC´B. [2] [3]
added angles between points and the miquel point: 20:58, 24 February 2009: 200 × 180 (16 KB) Inductiveload {{Information |Description={{en|1=A diagram showing en:Miquel's theorem - if three points A', B', C' are on the sides of a triangle ''ABC'', then the circles centred on the vertices of the triangle passing through the two points on the ...
Lester's theorem – Several points associated with a scalene triangle lie on the same circle; Milne-Thomson circle theorem; Miquel's theorem – Concerns 3 circles through triples of points on the vertices and sides of a triangle; Monge's theorem – The intersections of the 3 pairs of external tangent lines to 3 circles are collinear
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The second theorem considers five circles in general position passing through a single point M. Each subset of four circles defines a new point P according to the first theorem. Then these five points all lie on a single circle C. The third theorem considers six circles in general position that pass through a single point M. Each subset of five ...
Truncating a single vertex from a cube produces a simple polyhedron (one with three edges per vertex) that cannot be realized as an ideal polyhedron: by Miquel's six circles theorem, if seven of the eight vertices of a cube are ideal, the eighth vertex is also ideal, and so the vertices created by truncating it cannot be ideal.
Miquel configuration Rhombic dodecahedral graph. In geometry, the Miquel configuration is a configuration of eight points and six circles in the Euclidean plane, with four points per circle and three circles through each point. [1] Its Levi graph is the Rhombic dodecahedral graph, the skeleton of both Rhombic dodecahedron and Bilinski dodecahedron.