Moons of Mars. The two moons of Mars are Phobos and Deimos. Both moons were discovered in 1877 by Asaph Hall and are named after the characters Phobos (panic/fear) and Deimos (terror/dread) who, in Greek mythology, accompanied their father Ares, god of war, into battle. Ares was known as Mars to the Romans.
A triangular prism is a prism composed of two triangular bases and three rectangular sides. It is a pentahedron. It is implemented in the Wolfram Language as PolyhedronData[TriangularPrism]. The triangular prism has nine distinct nets, as illustrated above.
If b is the side of the base, h is the height of the triangle and H is the height of the prism, then Volume formula for triangular prism = $\frac{1}{2}$ bhH cubic units. Prisms are solids whose two ends are exactly the same shape. A prism is named after the shape of the faces at each end.