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A scalenohedron is similar to a bipyramid; the difference is that the scalenohedra has a zig-zag pattern in the middle edges. [ 17 ] It has two apices and 2 n basal vertices, 4 n faces, and 6 n edges; it is topologically identical to a 2 n -gonal bipyramid, but its 2 n basal vertices alternate in two rings above and below the center.
The elements of a polytope can be considered according to either their own dimensionality or how many dimensions "down" they are from the body.
In geometry, a disphenoid (from Greek sphenoeides 'wedgelike') is a tetrahedron whose four faces are congruent acute-angled triangles. [1] It can also be described as a tetrahedron in which every two edges that are opposite each other have equal lengths.
Triangle. Equilateral triangle; Isosceles triangle. Golden triangle (mathematics) Scalene triangle; Right triangle; Oblique triangle. Acute triangle; Obtuse Triangle
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Scalene may refer to: A scalene triangle, one in which all sides and angles are not the same. A scalene ellipsoid, one in which the lengths of all three semi-principal axes are different; Scalene muscles of the neck; Scalene tubercle, a slight ridge on the first rib prolonged internally into a tubercle
In the former case, equivalence of two definitions means that a mathematical object (for example, geometric body) satisfies one definition if and only if it satisfies the other definition. In the latter case, the meaning of equivalence (between two definitions of a structure) is more complicated, since a structure is more abstract than an object.