suorakulmioista

Suorakulmioista, also known as rectangles, are a type of quadrilateral with four right angles. This means that each of the four interior angles measures exactly 90 degrees. The opposite sides of a rectangle are equal in length, and the adjacent sides are perpendicular to each other. Rectangles are a special case of parallelograms, where the angles are all right angles.

The area of a rectangle can be calculated using the formula A = lw, where A represents the area, l represents the length of the rectangle, and w represents the width. The perimeter of a rectangle is calculated using the formula P = 2l + 2w, where P represents the perimeter.

Rectangles are commonly used in mathematics, architecture, and engineering due to their simplicity and symmetry. They are also used in everyday life, such as in the design of windows, doors, and screens. In mathematics, rectangles are often used as a basis for understanding more complex shapes and concepts.