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 ## The Elements of Solid Geometry

Charles Davison - 1905 - 122 páginas
...is perpendicular to the plane X. 20 SOLID GEOMETRY PARALLEL LINES IN DIFFERENT PLANES. 16. PROP. 15. Straight lines which are parallel to the same straight line are parallel to one another. L Let AB and CD be both parallel to LM ; to prove that AB is parallel to CD. Let X represent a plane...
Vista completa - Acerca de este libro ## Calendar, Parte1

University of Calcutta - 1907
...the same side of the line supplementary, 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 rectilineal figures. The sum of the angles of a triangle is equal to two right angles....
Vista completa - Acerca de este libro ## Calendar

...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., TBIANGLES AUD EECTILINBAL FIGUBES. The sum of the angles of a triangle is equal to two right anglesIf...
Vista completa - Acerca de este libro ## Calendar

...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. TBIANGLES AND EECTILINEAL FIGUBES. The sum of the angles of a triangle is equal to two right angles....
Vista completa - Acerca de este libro ## A School Geometry, Partes1-4

Henry Sinclair Hall - 1908
...PARALLELS ILLUSTRATED BY ROTATION. HYPOTHETICAL CONSTRUCTION ---------- 39 THEOREM 15. [Euc. I. 30.] Straight lines which are parallel to the same straight line are parallel to one another. 40 Triangles continued. THEOREM 16. [Euc. I. 32.] The three angles of a triangle are together equal...
Vista completa - Acerca de este libro ## The Ontario High School Geometry: Theoretical

Alexander H. McDougall - 1910 - 302 páginas
....-. straight lines which are parallel to the same straight line are not intersecting lines, ie : — Straight lines which are parallel to the same straight line are parallel to each other. THEOREM 8 If a transversal cuts two parallel straight lines, the alternate angles are equal...
Vista completa - Acerca de este libro ## Bulletin, Temas33-43

1915
...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 figure». — The sum of the angles of a triangle ie equal to two right angles....
Vista completa - Acerca de este libro ## Mathematics in the Lower and Middle Commercial and Industrial ..., Temas34-42

Edson Homer Taylor - 1915 - 96 páginas
...are together equal to two right angles, then tha 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 ## Statistics of Land-grant Colleges and Universities, Volumen3,Temas31-44

...are together equal to two right angles, then tha 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 ## Plane Geometry

John Wesley Young, Albert John Schwartz - 1915 - 223 páginas
...connection with a drafting board (see Fig. 1, p. 1) or a draftsman's triangle (see Fig. 29). 81. Two straight lines which are parallel to the same straight line are parallel to each FIG. 29. other. 82. A straight line which is perpendicular to one of two parallel lines is perpendicular...
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