The circumference (C) of a parallelogram (or the distance around it) is denoted: C= 2b+ 2H. Since all four sides (s) of a square are equal, then b= h= s, and its equation can be written A= 2s. The area (A) of a parallelogram is equal to the distance (length) of one side, called its base b, times the shortest distance (length) to the opposite side, called its altitude or height h. Assuming that it is a polygon, or a shape with closed sides, a 14-sided shape is called a tetradecagon or a tetrakaidecagon. Greek numbers Polygons are primarily named by prefixes from Ancient Greek numbers. That is, all four sides are equal in length and the sides that contain a common point are at right angles to one another. The triangle, quadrilateral and nonagon are exceptions, although the regular forms trigon, tetragon, and enneagon are sometimes encountered as well. Three special types of parallelograms are called the rhombus, the rectangle, and the square.Ī rhombus is a parallelogram with all four sides of equal length but the sides to not necessarily meet at right angles to one another.Ī rectangle is a parallelogram whose adjacent sides are perpendicular (meet at right angles) to one another and opposite sides are equal in length.Ī square is a parallelogram whose adjacent sides are both perpendicular (angled at 90 °) and equal in length. (A diagonal is a line that joins two opposite corners of a geometric figure, such as a parallelogram.) There are quite a few members of the quadrilateral family. Quadrilaterals are also sometimes called quadrangles or tetragons. In all types of parallelograms, the diagonals cut each other in half (or, bisect each other) where they intersect. A quadrilateral is a polygon with 4 sides. The following 2D shapes are all quadrilaterals: square, rectangle. What is a quadrilateral A quadrilateral is a four-sided two-dimensional shape. Login or Register to add to your saved resources. The following 2D shapes are all quadrilaterals: square, rectangle, rhombus, trapezium, parallelogram and. Find out how your child will learn about four-sided, 2D shapes in primary school and try some hands-on activities to reinforce their learning at home.
This four-sided figure is called a polygon (a two-dimensional figure formed of three or more straight sides) or, more specifically, a quadrilateral (a 2D figure formed of four straight sides). A quadrilateral is a four-sided two-dimensional shape. A parallelogram, in plane geometry, is a plane figure of four sides whose opposite sides are parallel to each other and where each side is equal in length to its opposite side.
0 kommentar(er)
