| Hall V. Williams - 1920 - 359 páginas
...its defect from a right angle. 2. The supplement of an angle is its defect from two right angles. 3. **The three angles of every triangle are equal to two right angles** : hence the oblique angles of a right angled triangle are each other's complements. 4. The sum of the... | |
| René Descartes - 1984 - 444 páginas
...we cannot divide it, at least in our thought). And because of these facts it can be truly asserted **that the three angles of every triangle are equal to two right angles** and that every body is divisible. Fifthly, \ ask my readers to spend a great deal of time and effort... | |
| René Descartes - 1988 - 249 páginas
...we cannot divide it, at least in our thought). And because of these facts it can be truly asserted **that the three angles of every triangle are equal to two right angles** and that every body is divisible. Fifthly, I ask my readers to spend a great deal of time and effort... | |
| 1900
...holds good only under the presupposition, that the constant is infinitely great. Only then is it true, **that the three angles of every triangle are equal to two right angles** ; also this can be easily proven if one takes as given the proposition, that the constant is infinitely... | |
| ...We wish to recall that proposition. Arbitrary association of ideas immediately suggests the words, **'The three angles of every triangle are equal to two right angles.'** But at first these are words only : our mind runs along an established train of sounds. By well-formed,... | |
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