Two semicircles with equal radii can form a complete circle. If the radii of two semicircles are not equal, two semicircles cannot form a complete circle. First of all, the characteristics of a circle are that it has no starting point and ending point and no directionality.

It has no obvious edges and straight lines, only a smooth curve, which makes people feel harmonious and perfect. Another important feature of a circle is that all its points are equidistant from the center of the circle, which makes the circle uniform and symmetrical in space.

Circle is widely used in many fields. In architectural design, circular windows, circular doors and circular vaults are all common elements, which can increase the aesthetic feeling and space utilization of buildings. In the field of arts and crafts, circular cut gems and glass products are often more exquisite. The circle is also the basic shape of many mechanical parts, such as bearings and gears.

Wheels are also common in life. For example, bowls, plates, cups and other daily necessities are often made into circles, because this can maximize the use of space and at the same time have aesthetic feeling. In addition, the circle is also the shape of many natural phenomena, such as the sun, the moon and the earth.

The Application of Circle in Life

Architectural design: In architectural design, circles are often used to design curved windows, doors and arched doorways. Circular buildings can not only increase the aesthetic feeling of buildings, but also make good use of space.

Crafts: Round handicrafts are very popular, such as vases made of carved glass, full of artistic sense, as well as porcelain, jewelry and so on. These handmade products are inseparable from the circle. Mechanical manufacturing: In mechanical manufacturing, circular bearing is a vital component. Its function is to support the movement of mechanical equipment and make the equipment run smoothly.