The Lucas circles can be drawn by inscribing a square in this other geometric shape. Clark Kimberling has catalogued over three thousand centers of this shape, some of which include the Nagel point an
The Lucas circles can be drawn by inscribing a square in this other geometric shape. Clark Kimberling has catalogued over three thousand centers of this shape, some of which include the Nagel point and the nine-point center. Kimberling center X1 refers to the point at which the angular bisectors intersect; that point does not necessary lie on the Euler line, unlike the (*) circumcenter, orthocenter, and centroid. For 10 points, name this geometric shape whose angles add up to one hundred eighty degrees and has three sides.
The Lucas circles can be drawn by inscribing a square in this other geometric shape.
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