 | Great Britain. Board of Education - Education - 1912 - 1044 pages
...together equal to two right angles, then the two straight lines are parallel ; and the converse. 4. Straight lines which are parallel to the same straight...to one another. Triangles and Rectilinear Figures. 5. The sum of the angles of a triangle is equal to two right angles. 6. If the sides of a convex polygon... | |
 | University of Calcutta - 1914 - 430 pages
...corresponding angles equal, (iii) the interior angles on the same side of the line supplementary, then the two straight lines are parallel ; and the converse....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. If the sides... | |
 | University of Allahabad - 1914 - 752 pages
...angles on the ваше side of the cut' ting line 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 Hoe are parallel to one another. TRIANGLES AND RECTILINEAL FIGURES. The sum of the angles of a triangle... | |
 | Education - 1915 - 816 pages
...interior angles on the same side of the cutting line are together equal to two right angles, then the two straight lines are parallel; and the converse....parallel to one another. Triangles and rectilinear figure». — The sum of the angles of a triangle ie equal to two right angles. If the sides of a convex... | |
 | John Wesley Young, Albert John Schwartz - Geometry, Modern - 1915 - 250 pages
...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... | |
 | Edith Long, William Charles Brenke - Geometry, Modern - 1916 - 292 pages
...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... | |
 | Edith Long, William Charles Brenke - Geometry, Plane - 1916 - 292 pages
...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:... | |
 | University of Allahabad - 1918 - 888 pages
...ssme side of the cutting line are together equal to two right angles, then the two straight lilies are parallel ; and the converse. Straight lines which...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. If the side... | |
 | Arthur Warry Siddons, Reginald Thomas Hughes - Geometry - 1926 - 202 pages
...angles on the same side of the cutting line are together equal to two right angles . . . .10 JTHEOREM 6. Straight lines which are parallel to the same straight line are parallel to one another 11 JTHEOREM 7. If straight lines are drawn from a point parallel to the arms of an angle, the angle... | |
 | University of Oxford - Universities and colleges - 1913 - 386 pages
...interior angles on the same side of the cutting line are together equal to two right angles, then the two straight lines are parallel ; and the converse....the same straight line are parallel to one another. If there are three or more parallel straight lines, and the intercepts made by them on any straight... | |
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Straight lines which are parallel to the same straight line are parallel to one another. 
