Diameters/Radii

The radius of a circle given a chord b, secant c, and tangent a.
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The radius of circle A given the coordinates of the vertices of the inscribed triangle CDE are known, where AB is the radius and the vertices are C(x[...
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The circumradius of circle D and inradius E given the coordinates of each vertex of a triangle ABC, where DE is the radius of circle A, FG is the radi...
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The radius of circle D given the coordinates of the vertices of the circumscribed triangle ABC are known.
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The radius of circle D given the coordinates of the vertices of the circumscribed triangle ABC are known.
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The circumradius of circle D and inradius of circle F given the equations of each side of the triangle ABC, where DE is the radius of circle D, FG is ...
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The radii of circles in an equilateral triangle. The first is the incircle, and the following circles are tangent to two sides of the triangle and the...
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