Inicia la sessió
 Llibres Llibres IF three straight lines be proportionals, the rectangle contained by the extremes is equal to the square of the mean ; and if the rectangle contained by the extremes be equal to the square of the mean, the three straight lines are proportionals. The Elements of geometry [Euclid book 1-3] in general terms, with notes &c ... - Pàgina 24
per Euclides - 1821
Visualització completa - Sobre aquest llibre ## Euclid's Elements of Geometry: From the Latin Translation of Commandine. To ...

John Keill - 1723 - 364 pàgines
...PROPOSITION XVII. THEOREM. If three Right Linet be proportional, the Re&tingle contained under the Extremes, is equal to the Square of the Mean ; and...the Extremes, be equal to the Square of the Mean, then the three Right Lines are proportional, - • T ET there be three Right Lines A, B, C, propor-....
Visualització completa - Sobre aquest llibre ## Euclid's Elements of Geometry,: From the Latin Translation of Commandine. To ...

Euclid, John Keill - 1733 - 393 pàgines
...demonftrated. PROPOSITION XVII. THEOREM. If three Right Lines be proportional, the RfRangle contained under the Extremes, is equal to the Square of the Mean ; and if the Rett angle under the Extremes be equal to the Square of the Mean, then the three Right Lines are proportional...
Visualització completa - Sobre aquest llibre ## Euclid's Elements of Geometry: From the Latin Translation of Commandine, to ...

John Keill - 1782 - 399 pàgines
...PROPOSITION XVII. THEOREM. If three Right Lines be proportional, the Reflatgle contained1 under the Extremes is equal to the Square of the Mean ; and if the Rettangle under the Extremes be equal to the Square of the Mean, then the three Right Lines are proportional....
Visualització completa - Sobre aquest llibre ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - 1806 - 518 pàgines
...&c. QED PROP. XVII. THEOR. IF three straight lines be proportionals, the rectangle contained by the extremes is equal to the square of the mean : and if the rectangle contained by the extremes be equal to the square of the mean, the three straight lines are proportionals....
Visualització completa - Sobre aquest llibre ## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1806 - 311 pàgines
...lines, &c. PROP. XVII. THEOR. IF three straight lines be proportional, the rectangle contained by the extremes is equal to the square of the mean ; and if the rectangle contained by the extremes be equal to the square of the mean, the three straight lines are proportional....
Visualització completa - Sobre aquest llibre ## A Course of Mathematics ...: Composed for the Use of the Royal Military ...

Charles Hutton - 1811
...rectangle of the two extremes is equal to the the square of the mean ; and, conversely, if the rectangle of the extremes be equal to the square of the mean, the three lines are proportionals. Corol. 2. Since it appears, by the rules of proportion in Arithmetic and Algebra,...
Visualització completa - Sobre aquest llibre ## A Course of Mathematics: For the Use of Academies as Well as ..., Volum 1

Charles Hutton - 1812
...rectangle of the two extremes is equal to the the square of the mean ; and, conversely, if the rectangle of the extremes be equal to the square of the mean, the three lines are proportionals. Carol. 2. Since it appears, by the rules of proportion in Arithmetic and Algebra,...
Visualització completa - Sobre aquest llibre ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - 1816 - 528 pàgines
...&c. QED .PROP. XVII. THEOR. IF three straight lines be proportionals, the rectangle contained by the extremes is equal to the square of the mean ; and if the rectangle contained by the extremes be equal to the square of the mean, the three straight lines are proportionals....
Visualització completa - Sobre aquest llibre ## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - 1819 - 333 pàgines
...ED S i PROP. XVII. THEOR. If three straight hues be proportionals, the. rectangle contained by the extremes is equal to the square of the mean : And if the rectangle contained by the extremes be equal to the square of the mean, the three straight lines are proportionals....
Visualització completa - Sobre aquest llibre ## Pantologia. A new (cabinet) cyclopædia, by J.M. Good, O. Gregory ..., Volum 5

John Mason Good - 1813
...proportionals. Prop. XVII. Theor. If three straight lines be proportionals, the rectangle contained by the extremes is equal to the square of the mean : and if the rectangle contained by the extremes be equal to the square of the mean, the three straight lines are proportionals....
Visualització completa - Sobre aquest llibre