Web Results

www.reference.com/world-view/12-sided-shape-called-1a60710ce1b50533

A 12-sided shape is called a dodecagon. A dodecagon is a type of polygon, which is a two-dimensional shape comprised of straight lines. These lines connect to each other to form a closed shape.

www.reference.com/article/20-sided-shape-called-ed5ed7ada5294aa5

A 20-sided shape is known as an icosagon. The icosagon is a polygon, and the sum of its interior angles is equivalent to 3,240 degrees.

www.reference.com/article/name-six-sided-shape-712a4626a4b06138

A six-sided shape is known as a hexagon. This refers to an item with a flat shape that has straight sides.

www.reference.com/world-view/seven-sided-shape-called-c2a3d02a8fe6112e

A seven-sided shape is called a heptagon. Some people refer to heptagons as septagons, but this mixes a Greek suffix with a Latin prefix, so it is not the preferred usage.

www.reference.com/article/name-eight-sided-shape-369b0706b930cb7e

The name of an eight-sided shape is an octagon. In addition to the eight sides, the octagon also has eight vertices and eight interior angles. The interior angles add up to 1080 degrees.

www.reference.com/article/name-nine-sided-shape-480485ed7ff02333

A nine-sided shape is called a nonagon or enneagon. A nonagon is a type of polygon. Polygons are closed-plane figures that are made of line segments.

www.reference.com/world-view/shape-five-sides-aadd7d59c9f2a766

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.

www.reference.com/article/four-sided-shape-called-8795b30283ccbabd

A four-sided shape is called a quadrilateral. All quadrilaterals have straight sides, are two-dimensional, have four vertices and have interior angles that add up to 360 degrees. Types of quadrilaterals include the square, rectangle, rhombus, parallelogram, trapezoid and kite.

www.reference.com/article/shape-equal-sides-14e6f54c6831a4cb

A shape that has three unequal sides is a scalene triangle. A shape that has four unequal sides is a quadrilateral. A shape that has more than four unequal sides is an irregular polygon.

www.reference.com/world-view/shape-six-sides-74a2203cc11f5404

A shape that has six sides is called a hexagon. A hexagon is a flat polygon with straight sides.