The other special quadrilaterals are rectangle, parallelogram, rhombus, and kite. The sum of the angles of a quadrilateral is 360°. The sum of the interior angles of a polygon is four times the sum of its exterior angles.

A regular quadrilateral is called a square. Right pyramids with a regular base A right pyramid with a regular base has isosceles triangle sides, with symmetry is C nv or 1, n, with order 2 n. A Quadrilateral has four-sides, it is 2-dimensional (a flat shape), closed (the lines join up), and has straight sides. Three forms exist of this die: a tetrahedron (pyramid shape) with four equilateral triangle -shaped faces, a rectangular prism with rounded or pointed ends, and an elongated long die with four triangular faces. A quadrilateral can also be regular or irregular. Pyramids can be doubled into bipyramids by adding a second offset point on the other side of the base plane. Math Polygons What is a 20-sided shape called Question: What is a 20-sided shape called Polygons in Geometry: In geometry, a polygon is defined as a shape with straight sides. Quadrilateral just means 'four sides' ( quad means four, lateral means side). Four-sided dice, abbreviated d4, 1 are often used in tabletop role-playing games to obtain random integers in the range 14. It has four sides, four angles, and four vertices. The triangle does not have a diagonal.Ī four-sided polygon is called a quadrilateral. It can also be defined as a regular polygon with an infinite number of sides, so that its boundary is smooth.Ī diagonal is a straight line connecting the opposite corners of a polygon through its vertex. What are the 4 sided ones called then Kinda weird - triangle, quadrilateral, pentagon. Really Basic Question- What are 4 sided shapes called again Like how triangles are 3 sided shapes, octagons are 8 sided shapes.

A polygon has three or more than three sides and if the sides are equal, it is called a regular polygon.Ī three-sided polygon is called a triangle and it is the basic polygon.Ī circle is a round two-dimensional figure that has no corners or edges. This didn't really fit on any other StackExchange website so the Maths one was the closest one where I could ask. The word quadrilateral is of Latin origin and “Quadri” means four.Ī polygon is defined as a flat or plane, a two-dimensional closed shape with straight sides. Hint: Recall the definitions of a triangle, quadrilateral, circle, and diagonal.

Four sided shape called