Because it is a cleaner source of power than oil or coal, nuclear energy is often mistakenly referred to as a renewable resource. The sources of the energy that people use the world over fall into two general categories: renewable and nonrenewable.While the supply of renewable resources, such as sunshine and wind, is virtually limitless, nonrenewable resource supplies are finite.Some nonrenewable resources, including oil and coal, are the product of millions of years of conversion from fossils, the buried remains of ancient plants and animals.ecause it is a cleaner source of power than oil or coal, nuclear energy is often mistakenly referred to as a renewable resource. The sources of the energy that people use the world over fall into two general categories: renewable and nonrenewable.
A regular octagon has 8 lines of symmetry and one center point of symmetry. An octagon can also have fewer lines of symmetry: 0, 2 or 4 . A regular octagon has 8 lines of symmetry and one center point of symmetry <br /> <br /> An octagon can also have fewer lines of symmetry: 0, 2 or 4 .
The regular octahedron is the Platonic solid with six polyhedron vertices, 12 polyhedron edges, and eight equivalent equilateral triangular faces, denoted. It is also uniform polyhedron and Wenninger model. It is given by the Schlaefli schlÃ¤fli symbol And wythoff. symbolhe dual polyhedron of an octahedron with unit edge lengths is a cube with edge lengths. The illustration above shows an origami octahedron constructed from a single sheet of paper (Kasahara and Takahama 1987, pp. 60-61). Like the cube, it has the octahedral group of symmetries.