The square side length can be obtained by finding the root of the area. For example, it is known that the area of a square is equal to 25 square centimeters, so the side length of a square is 5 centimeters.
A square is a special quadrilateral with the following characteristics:
1, side length, etc. The four sides of the square are equal in length, so it is an equilateral polygon.
2. Equal internal angles: the four internal angles of a square are right angles (90 degrees), that is, each internal angle is equal to 90 degrees.
3. Diagonals are equal: the two diagonals of a square are equal and perpendicular to each other, and the length of the diagonal is equal to the side length multiplied by √2.
4. Symmetry: A square is symmetrical and can be divided into two symmetrical parts through the center point.
5. area calculation: the area of a square can be calculated by the square of the side length, that is, the area is equal to the square of the side length.
Application of square
1, architecture and urban planning: plazas are often used in architectural design and urban planning, street intersections, plazas, etc. The symmetry and balance of a square make it a common element in design.
2. Painting art: Square can be used as one of the basic shapes of painting art works. Picture frames, canvases and drawing boards in painting are often square.
3. Mathematics and geometry: Square is one of the most basic shapes in geometry, including calculating area, perimeter and diagonal length. It is also the basic component in many mathematical problems and proofs.
4. Games and puzzles: squares are widely used in various board games, jigsaw puzzles and puzzle games. Chessboards, game boards and puzzle pieces are usually square.
5. Computer Graphics: In the fields of computer graphics and computer vision, squares are often used in image processing, image display and graphic drawing. Square pixel array is widely used in the storage and processing of digital images.
6. Product design: In product design, squares are often used as design elements or the basic shape of product appearance. For example, flat-panel TVs, mobile phones, computer screens and other products often use square or nearly square screens.