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In geometry, the **triangular cupola** is one of the Johnson solids (*J*<sub>3</sub>). It can be seen as half a cuboctahedron.

The 92 Johnson solids were named and described by Norman Johnson in 1966.

## Formulae

The following formulae for the volume and surface area can be used if all face are regular, with edge length *a*:Stephen Wolfram, "" from Wolfram Alpha. Retrieved July 20, 2010.

<math>V=(frac)a^3approx1.17851...a^3</math>

<math>A=(3+frac)a^2approx7.33013...a^2</math>

## References

## External links

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The 92 Johnson solids were named and described by Norman Johnson in 1966.

<math>V=(frac)a^3approx1.17851...a^3</math>

<math>A=(3+frac)a^2approx7.33013...a^2</math>

Read More

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