Quadrilateral
A quadrilateral is a polygon that has four sides
A quadrilateral is a polygon that has four sides. It is a two-dimensional shape with four vertices (corners) and four angles. The sum of the interior angles of a quadrilateral is always equal to 360 degrees.
Quadrilaterals can be classified into different types based on their properties. Here are some of the commonly known types of quadrilaterals:
1. Rectangle: A rectangle is a quadrilateral with four right angles (90 degrees each). Opposite sides of a rectangle are equal in length, making it a parallelogram as well.
2. Square: A square is a special type of rectangle where all four sides are equal in length, and all angles are right angles (90 degrees each). Like a rectangle, a square is a parallelogram.
3. Rhombus: A rhombus is a quadrilateral with all four sides equal in length. Its opposite angles are equal, but they are not right angles. In other words, a rhombus is a parallelogram with equal sides.
4. Parallelogram: A parallelogram is a quadrilateral with opposite sides parallel to each other. Its opposite angles are also equal. The lengths of the opposite sides are equal, and the sum of any two adjacent angles is always 180 degrees.
5. Trapezoid: A trapezoid is a quadrilateral with at least one pair of parallel sides. The other two sides are not parallel. The parallel sides are called the bases, and the non-parallel sides are the legs of the trapezoid.
6. Kite: A kite is a quadrilateral with two pairs of adjacent sides of equal length. The diagonals (lines connecting opposite vertices) of a kite are perpendicular to each other.
These are just some of the many types of quadrilaterals that exist. Each type has its own unique properties and characteristics, and their study is an important part of geometry.
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