An octahedron. It has three axis.
A pyramid is a four-sided, three-dimensional figure.
Three-dimensional. It has height, width and depth.
A three dimensional shape is where you have height, width, and length where as in a two dimensional shape you only have height and length
triangle
The base word for a many sided figure is polygon.All four sided polygons are called quadrilateralThe sub groups of planar (2 dimensional) quadrilaterals are:-rectangle (a special kind of parallelogram)square (a special kind of rectangle (rhomboid))trapeziumrhombus (an equilateral quadrangle which must also be a parallelogram)parallelogramThese are also called quadrangles (as they have four angles as well as four sides).A three dimensional shape with four faces (surfaces) is called a tetragonTetragons have six edges and four vertexes, each where three edges and three faces meet. A triangular pyramid is a tetragon. it is the simplest three dimensional shape.
An eight-sided three-dimensional shape is called an octohedron.
12-sided two dimensional shape: dodecagon12-sided three dimensional shape: dodecahedron
A two-dimension shape with eight sides is an octagon. A three-dimensional object with eight sides is an octahedron.
A hexahedron is a three-dimensional geometric shape having six sides; a hexagon is a two-dimensional six-sided shape.
Eight sided three-dimensional shape. Often this looks like two pyramids stuck together at their bases.
A cube or a hexahedron
It is a hendecahedron.
An octahedron is an eight-sided polyhedron (which is a three-dimensional polygon).
The shape is an octagon.
if it is a 2 dimensional shape you do height multiplied by width but if it is a three dimensional figure you multiply length by width by height and there are three dimensions.
A pyramid is a four-sided, three-dimensional figure.
Two-dimensional: Pentagon Three-dimensional: Pentahedron