"If two triangles have two sides equal to two sides respectively, and have the angles contained by the equal straight lines equal, they will also have the base equal to the base, the triangle will be e…"

"If equals be added to equals, the wholes are equal."

"If a number be the least that is measured by any prime numbers, it will not be measured by any other prime number except those originally measuring it."

"The properties of figures are derived from their definitions and postulates."

"A diameter of the circle is any straight line drawn through the center and terminated in both directions by the circumference of the circle, and such a straight line also bisects the circle."