Answer :
Answer:
Artificial
Explanation:
When we do not observe or understand any concept directly from our subjective experience, it is an artificial concept. Therefore, there are a specific set of exhibited characteristics which are not natural — for example, defining various basic shapes such as geometric shapes. Square has a particular set of attributes of four equal sides, for instance. Again, a triangle has three sides and three angles. The artificial concept can expand the knowledge by giving the original meaning of something before proceeding to the formulas.