T H E E L E M E N T S |
Book VI Proposition 7 | |
For, if the angle ABC is unequal to the angle DEF, one of them is greater. Let the angle ABC be greater; and on the straight line AB, and at the point B on it, let the angle ABG be constructed equal to the angle DEF. [I.23] Then, since the angle A is equal to the angle D, and the angle ABG to the angle DEF; therefore the remaining angle AGB is equal to the remaining angle DFE. [I.32] |
||
Previous Page Return to Propositions Next Page |