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What does the image of "sticking a gun to a thread, sweeping the whole area with a stick" mean? This is a math problem.
Gun and stick line = point moves into line, and stick sweeps large area = line moves into surface; It is geometric knowledge;

The word geometry comes from the translation of geometric elements. The Elements of Geometry is the most influential and largest mathematics textbook in the history of mathematics in the world. The introduction of Geometrical Elements into China was first attributed to Xu Guangqi, a scientist in the late Ming Dynasty. One of the great contributions of Xu Guangqi and Matteo Ricci's Chinese version of "The Elements of Geometry" is that the Chinese name of the discipline studying graphics is "Geometry", and some basic terms in geometry have been translated.

Extended data:

The earliest records of geometry can be traced back to ancient Egypt and Mesopotamia in the 2nd century BC.

Early geometry is a collection of empirical rules about length, angle, area and volume, which was developed for practical needs (such as exploration, architecture, astronomy and some handicrafts). The earliest known documents about geometry are Egyptian Rhine papyrus (2000- 1800 BC) and Moscow papyrus (about 1890 BC).

And ancient Babylonian clay tablets (such as Plympton 322 (English: Plympton 322) "(BC 1900). For example, Moscow papyrus gives a formula for calculating the truncated cone volume. The ancient Nubians in southern Egypt once established a geometric system, including the early version of sun clock.