Bicone
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In geometry, a bicone or dicone (from , and Greek: di-, both meaning "two") is the three-dimensional surface of revolution of a rhombus around one of its axes of symmetry. Equivalently, a bicone is the surface created by joining two congruent right circular cones at their bases. A bicone has circular symmetry and orthogonal bilateral symmetry.
In geometry, a bicone or dicone (from , and Greek: di-, both meaning "two") is the three-dimensional surface of revolution of a rhombus around one of its axes of symmetry. Equivalently, a bicone is the surface created by joining two congruent right circular cones at their bases. A bicone has circular symmetry and orthogonal bilateral symmetry. V = \frac{2}{3} \pi r^2 h and the surface area is A =2\pi r \ell\, where \ell = \sqrt{r^2 + h^2} is the slant height.
See also
Sphericon Biconical antenna
References
Text derived from https://en.wikipedia.org/w/index.php?oldid=1282809723 under CC BY-SA 4.0; modifications have been made.