Libros Libros Straight lines which are parallel to the same straight line are parallel to one another. Triangles and Rectilinear Figures. The sum of the angles of a triangle is equal to two right angles. Elements of Geometry: Containing the First Six Books of Euclid with a ... - Página 29
por John Playfair - 1855 - 318 páginas
Vista completa - Acerca de este libro ## Plane Geometry

Edith Long, William Charles Brenke - 1916 - 276 páginas
...corner, also from mid-point of side to mid-point of side, as shown in the figure. Assuming that the lines which are parallel to the same straight line are parallel to each other no matter whether they are all in the same plane or not, prove the following statements...
Vista completa - Acerca de este libro ## Plane Geometry

Edith Long, William Charles Brenke - 1916 - 276 páginas
...corner, also from mid-point of side to mid-point of side, as shown in the figure. Assuming that the lines which are parallel to the same straight line are parallel to each other no matter whether they are all in the same plane or not, prove the following statements:...
Vista completa - Acerca de este libro ## The Bombay University Calendar, Volumen1

University of Bombay - 1906
...are together equal to two right angles, then the two straight lines are parallel ; and the converse. Straight lines which are parallel to the same straight line are parallel to one another. Triangles and Rectilinear Figures. The sum of the angles of a triangle is equal to two right angles....
Vista completa - Acerca de este libro ## Elementary Geometry

Olaus Henrici - 1888 - 188 páginas
...eqnal. (ii) If a triangle has one of its angles a right angle, two of its angles are acute. THEOREM 6. Straight lines which are parallel to the same straight line are parallel to one another. A f B C k D I I fig. 89. Data AB, CD are each || to XY. To prove that AB is || to CD. Construction...
Vista previa limitada - Acerca de este libro ## A Shorter Geometry

...(2) corresponding angles are equal, (3) the interior angles on the same side of the PAGE THEOREM 6. Straight lines which are parallel to the same straight line are parallel to one another . . , 263 THEOREM 7. If straight lines are drawn from a point parallel to the arms of an angle, the...
Vista previa limitada - Acerca de este libro ## Paractical Geometry Based on the Various Geometry Books by Godfrey and Siddons

...and (iii). IIEx. 6. Prove Th. 5 (iii) by Playfair's Axiom and deduce Th. 5 (i) and (ii). | THEOREM 6. Straight lines which are parallel to the same straight line are parallel to one another. I Pig. 7. Data AB, CD are each || to XY. To prove that AB is || to CD. Construction Draw a st. line...
Vista previa limitada - Acerca de este libro ## Riders in Geometry

...examples having a bearing on this chapter are worked on pp. 37, 96 and 102. Exercise i 1. Prove that straight lines which are parallel to the same straight line are parallel to one another. 2. If a straight line is perpendicular to one of a system of parallel straight lines, it is perpendicular...
Vista previa limitada - Acerca de este libro ## Register

...are together equal to two right angles, then the two straight lines are parallel ; and the converse. Straight lines which are parallel to the same straight line are parallel to one another. Triangles and Rectilinear Figures. The sum of the angles of a triangle is equal to two right angles....
Vista completa - Acerca de este libro ## The Church Missionary Juvenile Instructor

1854
...wonderful help that announcement used to be to us in mastering " Hie, hicc, hoc," ami proving that " straight lines which are parallel to the same straight line are parallel to one another !" Some seventy years ago there was a famous pirate named Captain Kidd. His plan was to give chase...
Vista completa - Acerca de este libro ## A First Course of Geometry

...show that the straight lines which bisect the corresponding angles EFB, FGD are parallel. 35. PROP. 4. Straight lines which are parallel to the same straight line are parallel to one another. E /H -'K Let AB be parallel to LM and CD parallel to LM ; to prove that AB is parallel to CD. Draw...
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