What people are saying - Write a review
We haven't found any reviews in the usual places.
Other editions - View all
algebra analysis analytical angles appeared applied Arabic arithmetic astronomical became born calculus called cents century circle College complete conic considered contains continued curve Desargues Descartes determine developed differential equations discovery Edition Elementary Elements equal equations Euclid Euler Examples expressed figures fractions functions Gauss gave geometry given gives Greek Hindoo idea important infinite integral interest introduced invention Italy John knowledge known Lagrange Laplace later Leibniz lines mathematicians mathematics means mechanics method motion nature Newton notation observed original Paris period physics plane position principle probability problem professor progress proof proved published quantities question relation remained remarkable researches roots rule says showed sides solids solution solved square surface symbol tables theorem theory third tion translated Treatise triangle trigonometry University variable writings wrote
Page 292 - 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 90 - In an inscribed quadrilateral, the product of the diagonals is equal to the sum of the products of the opposite sides.