A dodecahedron.
pentagon
First of all, it's called a pentagon. It's special for many reasons. A pentagon shaped building offers more support than a quadrilateral (four sided shape). Also, the US Dept. of Defense has its headquarters in the Pentagon which is the shape of a pentagon.
A pentagon if all sides are equal - if they are not it is called a polygon
A cube. A 3-D shape with 6 sides which are all squares.
In geometry, a pentagon (from the Greek πέντε pente and γωνία gonia, meaning five and angle) is any five-sided polygon or 5-gon. The sum of the internal angles in a simple pentagon is 540°. A self-intersecting regular pentagon (or star pentagon) is called a pentagram.
No. A regular polygon has all sides the same length and all angles the same size. A regular pentagon has 5 angles each 108 degrees. A house-shaped pentagon does not have all angles the same size, so therefore it cannot be regular.
The Pentagon in Washington is obviously shaped like a pentagon. Black shapes on soccer balls, some road signs and the home plate on a baseball field are all pentagonal shaped objects.
The shape that has 5 sides is called a pentagon, from pent meaning 5 and gon meaning side. If all these sides are the same length, and all angles in the pentagon are equal, it is a regular pentagon. Otherwise, it is an irregular pentagon.
All except the base are always triangles; the shape of the base gives the name to the pyramid; eg a pentagonal pyramid has a pentagon as the base and five triangular faces; a triangular pyramid has three triangular faces and also has a triangle for the base.
Only if it is a regular pentagon. The pentagon is in the shape of an equal legged pentagon, but, due to human error, the pentagon's interior angles may not all be exactly equal.
The faces of a cube are all the same shape - a square.
all 2D figures have 1 face.