A polygon that has all sides congruent is called a "regular polygon." Regular polygons must also have all angles congruent, which is a side effect of having congruent sides. For instance, a square must always have four 90-degree angles because of its four congruent sides.
Know MoreA regular polygon may have any number of sides, as long as its sides and angles are all congruent. Common examples include five-sided pentagons, six-sided hexagons, seven-sided heptagons, eight-sided octagons and nine-sided nonagons. It is possible for any of these polygons to be irregular if they have the same number of sides but in different sizes.
Learn more about ShapesA 20-sided polygon is called an icosagon. Along with having 20 sides, all icosagons have 20 interior angles that add up to a total of 3240 degrees.
Full Answer >A parallelogram with all sides congruent is called a rhombus. All the sides of a rhombus are equal in length, which is why it is also called an equilateral quadrilateral. Other names commonly used to refer to a rhombus are "lozenge" and "diamond."
Full Answer >A 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 cube is a three-dimensional solid, more properly called a polyhedron. It is made up of six congruent square faces all set at perpendicular angles. It is one of the five convex polyhedrons known as the Platonic solids.
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