| Euclides - 1871 - 136 pages
...each is called the SUPPLEMENT of the other. Thus, in both figures, L ABD is the supplement of / ABC. **If, at a point in a straight line, two other straight lines,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
| Euclides, James Hamblin Smith - Geometry - 1872 - 376 pages
...SUPPLEMENT of the other. Thus, in both figures, / ABD is the supplement of / ABC. PROPOSITION XIV. **THEOREM. If, at a. point in a straight line, two other straight lines,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
| William Frothingham Bradbury - Geometry - 1872 - 124 pages
...; therefore the sum of all the angles at the point B is equal to four right angles. THEOREM II. 10. **If at a point in a straight line two other straight lines** iipon opposite sides of it make the sum, of the adjacent angles equal to two right angles, these two... | |
| Henry Major - Student teachers - 1873 - 592 pages
...; but CBE, EBD, two right angles ; therefore DBA, ABC, are toei equal to two right angles. XlV. — **If, at a point in a straight line, two other straight lines,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
| William Frothingham Bradbury - Geometry - 1873 - 288 pages
...therefore the sum of all the angles at the point B is equal to four right angles. THEOREM II. 10« **If at a point in a straight line two other straight lines** upon opposite sides of it make the sum of the adjacent angles equal to two right angles, these two... | |
| Francis Cuthbertson - Euclid's Elements - 1874 - 400 pages
...produce CB to X, PROPOSITION X. If two straight lines, drawn from one extremity of a straight line **on opposite sides of it, make the adjacent angles...to two right angles, these two straight lines shall** l>e in one and the same straight line. Let BC, BD drawn from B one extremity of AB make the adjacent... | |
| Euclides - 1874 - 120 pages
...straight lines BG and BH show that the angle GBH will in each case be a right angle. PROPOSITION 14. **THEOREM. If, at a point in a straight line, two other straight lines, on** the opposite sides of it, make the adjacent angles together equal to twi rigid angles, these two straight... | |
| Edward Atkins - 1874 - 426 pages
...two right angles (Ax. 1). Therefore, the angles which one straight line, &c. QED Proposition 14. — **Theorem. If, at a point in a straight line, two other straight lines,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
| Euclides - 1874 - 342 pages
...two right angles (Ax. 1). Wherefore, the angles which one straight line, &c. QED PROPOSITION 14. — **Theorem. If at a point in a straight line, two other straight lines** upon the opposite sides of it, make the adjacent angles together equal to two right angles, then these... | |
| Edward Atkins - 1876 - 130 pages
...two right angles (Ax. 1). Therefore, the angles which one straight line, <tc. QED Proposition 14. — **Theorem. If, at a, point in a straight line, two other straight lines,** upon the opposite sides of it, make the adjacent angles together equal to two right angles, these two... | |
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