| Ivor Grattan-Guinness, Gerard Bornet - Mathematics - 1997 - 310 pages
...that all right angles are equal to one another. 5. And that if a straight line meet two other straight **lines so as to make the two interior angles on the...it taken together less than two right angles these** straight lines being continually produced shall meet on that side on which are the angles which are... | |
| New Zealand Institute - Science - 1886 - 532 pages
...parallel-axiom mentioned in my paper. Form (a), (Euclid's) is : — " If a straight line meets two straight **lines, so as to make the two interior angles on the...it taken together less than two right angles, these** straight lines being I continually produced shall at length meet upon that side on which are the angles... | |
| Mathematicians - 1896 - 742 pages
...angles AKH and CfJK equal to two right angles. QED PROPOSITION XI. If a straight line meet two straight **lines so as to make the two interior angles on the same side of it taken** tdgethcr less than two light angles, these straight lines, being continually produced, shall at length... | |
| James Gow - 380 pages
...lines cannot enclose a space: 11. All right angles are equal: 12. If a straight line meet two straight **lines, so as to make the two interior angles on the same side of it** together less than two right angles, these straight lines will meet if produced on that side. Of these... | |
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