## A History of Mathematics |

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### Popular passages

Page 300 - THEOREM. If a straight line, falling on two other straight lines, make the alternate angles equal to each other ; these two straight lines shall be parallel.

Page 21 - The formula states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the base and altitude.

Page 98 - In an inscribed quadrilateral, the product of the diagonals is equal to the sum of the products of the opposite sides.