Once upon a time there was an Aquarius girl who really loved Santa shirt
Before Thales every geologist or geologist had to find "techniques" to measure distances, surfaces, etc. Greek Greek philosopher and mathematician, Thalès de Milet (7th century) -VI) had the ingenious idea of measuring heights by using the ball at a time when the "long shadow is equal to the object", that is, when the rays of the sun shone through an angle of 45 degrees. To measure the height of the Pyramid he improved his method using the sun's rays at any time. And he was able to stop there, but the whole value of his work was to come from experimentation to formulate a theory: the use of sunlight rays allowed him to study the paths. straight parallel and the relationship between the projection length and the original length. Then he formulated a theorem from which the Thalès theorem was called: "Parallel lines project long sections of scale from one line to another." Thus, he draws geometry from the notebook of techniques by introducing deductive and substantive views of mathematics.
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