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圆形,是一个看起来很简单,实际上很奇妙的形状.古代人们最早是从太阳、阴历十五的月亮得到圆的概念的.随后圆形被广泛应用到生活中,比如圆形的陶瓷,圆形的石纺锤等,大约在4000年前,人们将圆形的木盘固定在木架上,这就形成了最初的车子.尽管圆形得到了广泛的应用,但人们还是不懂圆的性质.古埃及人认为:圆,是神赐给人的神圣图形,一直到两千多年前,我国的墨翟在他所著的《墨子》中给圆形下了精确的定义,
The shape of the circle is a simple, virtually fantastic shape. The earliest ancient people got the concept of a circle from the sun and the moon of the lunar eclipse 15. Later, the circle was widely used in the life, such as the round ceramic , Round stone spindles, etc. About 4000 years ago, people fixed the circular wooden plate on the wooden frame, which formed the original car.Although circular has been widely used, but people still do not understand the circle The ancient Egyptians believed that the circle was the sacred figure given by God and exactly two thousand years ago, Mo Zhai in our country gave a precise definition of the circle in his “Mozi”