... " " All science, even the most abstract and mathematical, has on the individual, as has been in humans, an experimental home . The first experiences are simple observations of events that life itself presents for our consideration. The analysis of these facts raises the desire to artificially create new ones, to submit it to study and compare "
Piug Adam.
Euclid (300 BC), define: Definition 4. A straight line is that which lies evenly with the points on it. Definition 15. A circle is a plane figure contained by a single line (called the circumference) such that all straight lines protruding from one of the points within the figure (to the circle) are equal. Definition 16. And he called point center the circle. Definition 23. straight lines parallel are straight lines, being in the same plane and be extended indefinitely in both directions, are found in any of them.
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