## rhombus

### A rhombus is a type of quadrilateral that has several unique properties

A rhombus is a type of quadrilateral that has several unique properties. Here are some important things to know about a rhombus:

1. Definition: A rhombus is a quadrilateral with four sides of equal length. In other words, all four sides of a rhombus have the same measure. This is often expressed by saying that a rhombus is a special type of parallelogram, with all sides being congruent.

2. Angles: The opposite interior angles of a rhombus are congruent. This means that if one angle inside the rhombus measures x degrees, then the opposite angle will also measure x degrees. However, the angles within the rhombus can vary in size.

3. Diagonals: The diagonals of a rhombus have several interesting properties. First, the diagonals bisect each other, meaning that they divide each other into two equal parts. Second, the diagonals are perpendicular to each other, forming four right angles where they intersect.

4. Area: To find the area of a rhombus, you can use the formula A = (d1 x d2) / 2, where d1 and d2 are the lengths of the diagonals. In this formula, you multiply the lengths of the diagonals and divide by 2 to get the area.

5. Perimeter: The perimeter of a rhombus is simply the sum of all four sides. Since all sides of a rhombus are equal in length, you can also find the perimeter by multiplying the length of one side by 4.

6. Properties: Besides the aforementioned properties, a rhombus also possesses symmetry along its diagonals, meaning that it can be folded in half along each diagonal without changing its shape. Additionally, a rhombus can be inscribed within a circle, with all four vertices touching the circle’s circumference.

Overall, a rhombus is a special type of quadrilateral that exhibits symmetry, equal side lengths, congruent opposite angles, perpendicular diagonals, and interesting formulas for calculating its area and perimeter.

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