A pyramid with a rectangular base has five faces. Since pyramids can have bases with any number of sides, the formula to calculate the number of faces is the number of sides of the shape that forms the base of the pyramid plus one.
Know MorePyramids are three-dimensional figures with a polygon base and triangles that meet at one vertex. The vertex where the sides meet is referred to as the apex. The name of the pyramid is dictated by the shape at the base of the pyramid. A pyramid with a four-sided base is referred to as a square pyramid. The famous pyramids in Egypt are square pyramids.
Learn MoreThere are four triangular faces on a tetrahedron. A face describes an individual surface on an object. On the tetrahedron, people can only see three of the four faces.
Full Answer >In geometry, a shape with five sides is called a pentagon. A regular pentagon has five sides of equal length, as well as five equal angles. A standard "STOP" sign in the US is a regular pentagon, as is the Pentagon building in the District of Columbia.
Full Answer >A rectangle is a quadrilateral that has four sides. In a rectangle, the opposite sides are of equal length and also parallel. Because of this, a rectangle is also a parallelogram.
Full Answer >Mathisfun.com states that an irregular polygon is a polygon that does not have all sides equal and all angles equal. There is no specific term for a polygon that has four completely unequal sides.
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