A five-sided shape is called a pentagon. In geometry, all two dimensional shapes are known as polygons, so it can also be referred to as a five-sided polygon.
Know MoreThere are two types of pentagon; regular and irregular. A regular pentagon has five sides of equal length.
An irregular pentagon has five sides of varying length. A regular pentagon will always have the same interior and exterior angles. The interior angle of a regular pentagon is 108 degrees and the exterior angle of a regular pentagon is 72 degrees. The total interior angles of a pentagon will always equal 540 degrees.
Learn more about ShapesA polygon with seven sides is called a heptagon. A polygon is a closed geometric shape that has at least three sides and angles.
Full Answer >A shape with 24 sides is called an icosikaitetragon. Greek prefixes are used for naming shapes by the number of sides. Numbers above 20 have additional special rules that must be followed to construct their names.
Full Answer >An 11-sided polygon is called a hendecagon. In order for an 11-sided shape to be considered a hendecagon, its sides must all be straight and form a closed shape.
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.
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