Euclid — "To construct a square on a given straight line."
To construct a square on a given straight line.
To construct a square on a given straight line.
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"Parallelograms which are on the same base and in the same parallels are equal to one another."
"The only purpose of the 'Elements' is to demonstrate mathematically certain fundamental propositions."
"To cut off from the greater of two given unequal straight lines a straight line equal to the less."
"A prime number is that which is measured by a unit alone."
"Further, of trilateral figures, a right-angled triangle is that which has a right angle, an obtuse-angled triangle that which has an obtuse angle, and an acute-angled triangle that which has its three…"
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