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  2. Spherical wedge - Wikipedia

    en.wikipedia.org/wiki/Spherical_wedge

    Hart (2009) [3] states that the "volume of a spherical wedge is to the volume of the sphere as the number of degrees in the [angle of the wedge] is to 360". Hence, and through derivation of the spherical wedge volume formula, it can be concluded that, if V s is the volume of the sphere and V w is the volume of a given spherical wedge,

  3. Exterior algebra - Wikipedia

    en.wikipedia.org/wiki/Exterior_algebra

    The wedge product was introduced originally as an algebraic construction used in geometry to study areas, volumes, and their higher-dimensional analogues: the magnitude of a 2-blade is the area of the parallelogram defined by and , and, more generally, the magnitude of a -blade is the (hyper)volume of the parallelotope defined by the ...

  4. Wedge (geometry) - Wikipedia

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

    A wedge is a polyhedron of a rectangular base, with the faces are two isosceles triangles and two trapezoids that meet at the top of an edge. [1]. A prismatoid is defined as a polyhedron where its vertices lie on two parallel planes, with its lateral faces are triangles, trapezoids, and parallelograms; [2] the wedge is an example of prismatoid because of its top edge is parallel to the ...

  5. Differential form - Wikipedia

    en.wikipedia.org/wiki/Differential_form

    The change of variables formula and the assumption that the chart is positively oriented together ensure that the integral of ω is independent of the chosen chart. In the general case, use a partition of unity to write ω as a sum of n -forms, each of which is supported in a single positively oriented chart, and define the integral of ω to be ...

  6. Exterior calculus identities - Wikipedia

    en.wikipedia.org/wiki/Exterior_calculus_identities

    The exterior product is also known as the wedge ... through Cartan's magic formula for a given ... of constant function 1 is the volume form) Co-differential operator ...

  7. Spherical cap - Wikipedia

    en.wikipedia.org/wiki/Spherical_cap

    An example of a spherical cap in blue (and another in red) In geometry, a spherical cap or spherical dome is a portion of a sphere or of a ball cut off by a plane.It is also a spherical segment of one base, i.e., bounded by a single plane.

  8. n-sphere - Wikipedia

    en.wikipedia.org/wiki/N-sphere

    The formula for the volume of the ⁠ ⁠-ball can be derived from this by integration. Similarly the surface area element of the ⁠ ( n − 1 ) {\displaystyle (n-1)} ⁠ -sphere of radius ⁠ r {\displaystyle r} ⁠ , which generalizes the area element of the ⁠ 2 {\displaystyle 2} ⁠ -sphere, is given by

  9. List of formulas in elementary geometry - Wikipedia

    en.wikipedia.org/wiki/List_of_formulas_in...

    Perimeter#Formulas – Path that surrounds an area; List of second moments of area; List of surface-area-to-volume ratios – Surface area per unit volume; List of surface area formulas – Measure of a two-dimensional surface; List of trigonometric identities; List of volume formulas – Quantity of three-dimensional space