 | Euclides - 1864 - 448 pàgines
...PROPOSITION XIII. THEOREM. The angles which otie straight line makes with another upon one side of it, are either two right angles, or are together equal...with CD, upon one side of it, the angles CBA, ABD. Then these shall be either two right angles, or, shall be together, equal to two right angles. A E... | |
 | Robert Potts - 1865 - 528 pàgines
...AB. PROPOSITION XIII. THEOREM. The angles which one straight line males with another upon one side of it, are either two right angles, or are together equal...with CD, upon one side of it, the angles CBA, ABD. Then these shall be either two right angles, or, .shall be together, equal to two right angles. £... | |
 | Euclides - 1865 - 80 pàgines
...to FGH. PROPOSITION V. THEOR. The angles which one straight line makes with another on one side of it are either two right angles, or are together equal to two right angles. Let the straight line CD make with AB on the same side of it the angles ACD and BCD, these are either two right angles, or... | |
 | Euclides - 1865 - 402 pàgines
...point without it. Prop. 13. The angles which one straight line makes with another npon one 5ide of it, are either two right angles, or are together equal to two right angles. Prop. 14. If, at a point in a straight line, two other straight lines, upon the opposite sides of it,... | |
 | Alfred Challice Johnson - 1865 - 166 pàgines
...vice versa. (Eue. L, 5, б.) 2. The angles which one straight line makes with another upon one side of it, are either two right angles, or are together equal to two right angles, or 180°. (Eue. I., 13.) 3. If two straight lines cut one another, the vertical or opposite angh-s... | |
 | John Robertson (LL.D., of Upton Park sch.) - 1865 - 106 pàgines
...(iv.) parallel lines. [KC] 38. The angles which one straight line makes with another upon one side of it, are either two right angles or are together equal to two right angles. [KC] 39. The straight lines which join the extremities of two equal and parallel straight lines towards... | |
 | William Harris Johnston - 1865 - 478 pàgines
...another upon one tide of it, as the angles с Ъ d and а Ъ d, or abe and с Ь e, in the figure above, are either two right angles, or are together equal to two right angles. An angle greater than a right angle is called an obtuse angle. An angle less than a right angle is... | |
 | James Fraser (bp. of Manchester.) - 1866 - 480 pàgines
...corollaries to the proposition : The angles which one straight line makes with another, upon one side of it, are either two right angles, or are together equal to two right angles. 3. Prove that the angles at the base of an isosceles triangle are equal. 4. Prove that if, from a point... | |
 | Euclid, Isaac Todhunter - 1867 - 426 pàgines
...THEOREM. The angles which one straight line makes with another straight line on one side of it, either are two right angles, or are together equal to two right angles. Let the straight line AB make with the straight line CD, on one side of it, the angles CBA, ABD : these either are two right angles, or... | |
 | Euclid, Isaac Todhunter - 1867 - 424 pàgines
...THEOREM. The angles which one straight line makes with another straight line on one side of it, either are two right angles, or are together equal to two right angles. Let the straight line AB make with the straight line CD, on one side of it, the angles CBA, ABD : these either are two right angles, or... | |
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The angles which one straight line makes with another upon one side uf it, are, either two right angles, or are together equal to two right angles. Let the straight line AB make with CD, upon one side of it the angles CBA, ABD ; these are either two right... 
