Pinyin of the center of the circle

The pinyin of the center of the circle is yuá n x ρ n.

A circle is a geometric figure, which refers to the set of all points on a plane with a constant distance from a fixed point. This given point is called the center of the circle.

The distance as a fixed value is called the radius of a circle. When a line segment rotates once around one of its endpoints on a plane, the trajectory of its other endpoint is a circle. There are countless circles in diameter; A circle has countless axes of symmetry. The diameter of a circle is twice the radius, and the radius of a circle is half the diameter.

"Yuan" is a Chinese character, which consists of "Ai" and "Yuan". Its Chinese interpretation is: a figure shaped like "O" without edges and corners; The ratio of the distance formed by the circumference or diameter of an object to π is a constant.

The earliest record of the word "circle" can be traced back to Oracle Bone Inscriptions in the Western Zhou Dynasty, and its shape is not much different from today. In the traditional culture of ancient people in China, "circle" is considered as one of the most perfect and basic geometric shapes. In the Book of Changes, "the sky is round and the place is round" has become a perfect description of the natural order, so "circle" has become a representative of beautiful praise.

In geometry, a "circle" is defined as a set with equal distances from all points on a plane to fixed points. This fixed point is called the center of the circle. The importance of a circle lies in its many special properties and applications. For example, the product of two chords intersecting on a circle is equal; The angle of circle is half of the central angle it faces; Any regular polygon can be approximated by the inscribed regular polygon of a circle, and the equivalent calculation results can be obtained.

In addition, we can see that the "circle" also has a very profound cultural connotation. In Chinese civilization, the symbolic meaning of "circle" is very rich, with the meaning of harmony, perfection, perfection, circulation and endless life. For example, reunion represents family harmony, success represents the smooth completion of work, and the round table represents equality and mutual assistance, which is regarded as one of the most philosophical symbols in China traditional culture.

In life, people often use the concept of "circle", such as "dream interpretation", "perfection" and "perfection". At the same time, the concept of "circle" has been widely used in the field of art, such as the "circle meaning" in China's traditional painting, that is, the artist in painting must face the circle in his chest, return to the circle and seek the accurate presentation of "meaning".

Generally speaking, "circle" is a concept with rich cultural connotation and mathematical characteristics. It occupies an important position in Chinese civilization and is widely used in modern science and technology.