Parallelogram: definition, formula, characteristics and properties

TIME.CO, JakartaThe parallelogram formula is information that many people are looking for, especially those who are still in school. In the subjects mathematicsa parallelogram is a flat shape that is certainly familiar to us.

In elementary school, learning about parallelograms was all about the concept. In fact, there are many things that can be discussed about parallelograms. In this article, we will thoroughly discuss the meaning, characteristics, properties and also the formula of the parallelogram.

Understanding Parallelograms

As explained, this time we will talk about parallelograms: their meaning, formula and characteristics. One of the most basic things is the very definition of a parallelogram. Therefore, everyone must understand what a parallelogram is as a flat shape.

Keep in mind that a parallelogram is a two-dimensional flat shape whose shape is almost similar to a quadrilateral made up of two parallel edges facing each other. However, opposite angles of a parallelogram do not form 90 degree angles.

Unlike other flat shapes such as squares which have 4 axes of symmetry, parallelograms have no axes of symmetry. So, a parallelogram is a flat shape with 2 pairs of opposite sides of equal size and 2 pairs of edges of the same length.

Parallelogram formula

After knowing the meaning of a parallelogram, the next step is to understand its formula. In its application, there are 2 of them formula that is, calculate the perimeter and area of ​​a parallelogram. Here is the formula:

1. Perimeter formula

The perimeter of a parallelogram can be calculated by adding all the sides of the parallelogram. So, this formula can be written in the following form:

Perimeter ABCD = side AB + side BC + side CD + side AD

2. Area formula

Next, the formula for the area of ​​a parallelogram can be obtained by multiplying the base by the height of the parallelogram. The height of a parallelogram is obtained by drawing a straight line from the top corner point to the bottom corner point.


Area = base x height

Characteristics of parallelograms

When talking about parallelograms, it is known that parallelograms have characteristics that differentiate them from other flat shapes. Below are the characteristics of flat shapes you should know:

  • A parallelogram has four sides (2 pairs) parallel to each other.
  • A parallelogram has four angles opposite each other and of the same size.
  • Parallelograms have opposite sides of the same length.
  • A parallelogram has two diagonal lines that intersect each other. This diagonal divides the parallelogram into two congruent triangles.

Properties of parallelograms

After knowing the characteristics of a parallelogram, we will then discuss the properties of a parallelogram. The following are the properties of a flat parallelogram shape:

1. It has no axis of symmetry

The most important characteristic of a parallelogram is that it does not have an axis of symmetry. As is known, parallelograms have an asymmetric shape. Therefore there is no axis of symmetry that can divide a parallelogram into two congruent parts.

2. Number of angles 360 degrees

The next feature is that the sum of the angles is 360 degrees. The corners of a parallelogram do not form 90 degree angles. The measures of two adjacent angles are perpendicular to each other or equal to 180 degrees, so the total is 360 degrees.

3. The diagonals intersect each other

The diagonal of a parallelogram can divide the flat shape into two equal parts. These diagonal lines also have the condition of intersecting at the midpoint of the parallelogram shape.

This is a complete discussion on parallelograms: meaning, formula, characteristics and properties. Hopefully this information will be helpful in increasing your knowledge of the mathematics of flat shapes.


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