| 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... | |
| 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.... | |
| University of Allahabad - 1907
...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... | |
| University of Allahabad - 1908
...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.... | |
| 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... | |
| 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... | |
| 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.... | |
| 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.... | |
| United States. Office of Education - 1915
...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.... | |
| 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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