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几何概念是现实生活中客观事物的空间形式的本质属性在人们头脑中的反映。它是在生产、生活中产生的，又通过长期的实践、认识、再实践、再认识的循环反复的过程，逐步完善、发展、形成的。因此，几何概念具有客观性、实践性的特点。我们在认识、理解、掌握和运用几何概念的过
The concept of geometry is the reflection of the nature of the spatial form of objective things in real life. It is produced in production and life, and it is gradually perfected, developed, and formed through a long and repeated process of practice, understanding, practice, and understanding. Therefore, the concept of geometry has the characteristics of objectivity and practicality. We recognize, understand, grasp and apply geometric concepts