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2. Radius (bone) - Wikipedia

   en.wikipedia.org/wiki/Radius_(bone)

   The ulna is longer than the radius, but the radius is thicker. The radius is a long bone, prism-shaped and slightly curved longitudinally. The radius is part of two joints: the elbow and the wrist. At the elbow, it joins with the capitulum of the humerus, and in a separate region, with the ulna at the radial notch. At the wrist, the radius ...

3. Brahmagupta's formula - Wikipedia

   en.wikipedia.org/wiki/Brahmagupta's_formula

   This formula generalizes Heron's formula for the area of a triangle. A triangle may be regarded as a quadrilateral with one side of length zero. From this perspective, as d approaches zero, a cyclic quadrilateral converges into a cyclic triangle (all triangles are cyclic), and Brahmagupta's formula simplifies to Heron's formula.

4. Krukenberg procedure - Wikipedia

   en.wikipedia.org/wiki/Krukenberg_procedure

   The success of the Krukenberg procedure depends directly on the strength of the pronator teres, the sensibility of the skin surrounding both ulna and radius, elbow mobility, and mobility of the ulna and radius at the proximal radioulnar joint. Individual patient expectations and motivations, although more difficult to assess, probably play a ...

5. Radial fossa - Wikipedia

   en.wikipedia.org/wiki/Radial_fossa

   Download as PDF; Printable version; In other projects Wikidata item; ... It receives the anterior border of the head of the radius when the forearm is flexed. Structure

6. List of formulae involving π - Wikipedia

   en.wikipedia.org/wiki/List_of_formulae_involving_π

   More formulas of this nature can be given, as explained by Ramanujan's theory of elliptic functions to alternative bases. Perhaps the most notable hypergeometric inversions are the following two examples, involving the Ramanujan tau function τ {\displaystyle \tau } and the Fourier coefficients j {\displaystyle \mathrm {j} } of the J-invariant ...

7. Sagitta (geometry) - Wikipedia

   en.wikipedia.org/wiki/Sagitta_(geometry)

   In the following equations, denotes the sagitta (the depth or height of the arc), equals the radius of the circle, and the length of the chord spanning the base of the arc. As 1 2 l {\displaystyle {\tfrac {1}{2}}l} and r − s {\displaystyle r-s} are two sides of a right triangle with r {\displaystyle r} as the hypotenuse , the Pythagorean ...

8. Dividing a circle into areas - Wikipedia

   en.wikipedia.org/wiki/Dividing_a_circle_into_areas

   The number of points (n), chords (c) and regions (r G) for first 6 terms of Moser's circle problem. In geometry, the problem of dividing a circle into areas by means of an inscribed polygon with n sides in such a way as to maximise the number of areas created by the edges and diagonals, sometimes called Moser's circle problem (named after Leo Moser), has a solution by an inductive method.

9. Radioulnar synostosis - Wikipedia

   en.wikipedia.org/wiki/Radioulnar_synostosis

   Radioulnar synostosis is a rare condition where there is an abnormal connection between the radius and ulna bones of the forearm. [1] This can be present at birth ( congenital ), when it is a result of a failure of the bones to form separately, or following an injury (post-traumatic).