Euclid — "To bisect a given rectilinear angle."
To bisect a given rectilinear angle.
To bisect a given rectilinear angle.
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"If equals be subtracted from equals, the remainders are equal."
"No trace of Euclid's personality has survived."
"And the greater is a multiple of the less when it is measured by the less."
"In isosceles triangles the angles at the base are equal to one another, and, if the equal straight lines be produced further, the angles under the base will be equal to one another."
"A figure is that which is contained by any boundary or boundaries."
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