Euclid — "A prime number is that which is measured by a unit alone."
A prime number is that which is measured by a unit alone.
A prime number is that which is measured by a unit alone.
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"That which is without parts has no magnitude."
"And when the lines containing the angle are straight, the angle is called rectilineal."
"An obtuse angle is an angle greater than a right angle."
"To describe a circle with any centre and radius."
"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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