 | 1973 - 590 Seiten
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 | Ernst Mach - 1975 - 432 Seiten
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 | 1979 - 164 Seiten
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 | Ivor Grattan-Guinness, Gerard Bornet - 1997 - 310 Seiten
...4. And 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...these straight lines being continually produced shall meet on that side on which are the angles which are less than two right angles. 6. And that two straight... | |
 | Dugald Stewart - 2006 - 504 Seiten
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 | New Zealand Institute - 1886 - 532 Seiten
...the 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...than two right angles, these straight lines being I continually produced shall at length meet upon that side on which are the angles which are less than... | |
 | Euclid - 1859 - 254 Seiten
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If a straight line meets two straight lines, so as to " make the two interior angles on the same side of it taken " together less than two right angles... 
