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 Books Books 1 - 10 of 175 on Wherefore, if a straight line, &c. QED PROPOSITION XXVIII. THEOREM. If a straight.... Wherefore, if a straight line, &c. QED PROPOSITION XXVIII. THEOREM. If a straight line falling upon two other straight lines, make the exterior angle equal to... Pure Mathematics - Page 118
1874 ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid, Robert Simson - Euclid's Elements - 1806 - 518 pages
...straight line, &c. QED PROP. XXVIII. THEOR. IF a straight line falling upon two other straight lines makes the exterior angle equal to the interior and opposite upon the same side of the line ; or makes the interior angles upon the same side together equal to two right angles ; the two straight... ## The British Encyclopedia, Or Dictionary of Arts and Sciences ..., Volume 5

...the exterior angle equal to the interior and opposite augle on the same side ; and likewise, the two interior angles upon the same side, together, equal to two right angles. If AB, (fig. 5) be parallel to CD, and £ F cut them in the points HG, then the angle AHG equals the... ## The British encyclopedia, or, Dictionary of arts and sciences

William Nicholson - 1809
...the exterior angle equal to the interior and opposite angle on the same side ; and likewise, the two interior angles upon the same side, together, equal to two right angles. If AB, (fig. 5) be parallel to С D, and EF cut them in the points HG, then the angle AHG equals the... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclid - Geometry - 1810 - 518 pages
...parallel to CD. Wherefore, if a straight line, &c. QED PROP. XXVIII. THEOR. IF a straight line falling upon two other straight lines make the exterior angle...interior and opposite upon the same side of the line; or makes the interior angles upon the same side together equal to two right angles; the two straight lines... ## Pantologia. A new (cabinet) cyclopædia, by J.M. Good, O. Gregory, and N ...

...line fall upon two parallel straight lines, it makes the alternate angles equal to one another; and the exterior angle equal to the interior and opposite upon the same side; and likewise the two interior angles upon the same side together equal to two right ansies. Prop. XXX.... ## The Elements of Euclid; viz. the first six books, together with the eleventh ...

Euclides - 1814
...makes the exterior angle equal to the interior and opposite upon the same side of the line; or makes the interior angles upon the same side together equal...parallel to one another. Let the straight line EF, p which falls upon the two ^ straight lines AB, CD, make \ the exterior angle EGB equal y \G- p to... ## The Elements of Euclid: Viz. the First Six Books, Together with the Eleventh ...

Euclides - Euclid's Elements - 1816 - 528 pages
...line, &c. QED PROP. XXVIII. THEOR. IF a straight line falling upon two other straight lines, makes the exterior angle equal to the interior and opposite upon the same side of the line; or makes the interior angles upon the same side together equal to two right angles ; the two straight... ## Pantologia. A new (cabinet) cyclopædia, by J.M. Good, O. Gregory, and N ...

...another, these two straight lines »hall be parallel. Prop. XX V 111. Theor. If a straight line falling upon two other straight lines make« the exterior...interior and opposite upon the same side of the line; or makes the interior angles upon i he same side together equal to two rirhc angles ; the two straight... ## Elements of Geometry: Containing the First Six Books of Euclid, with a ...

John Playfair - Circle-squaring - 1819 - 333 pages
...exterior angle equal to the interior and opposite upon the same side of the line; or makes the imerior angles upon the same side together equal to two right angles ; the two straight lines are parallel to one another. Let the straight line EF, which falls upon the two straight lines AB,... 