T H E E L E M E N T S |
Book VI Proposition 7 | |
Therefore, once more, the angle ABC is not unequal to the angle DEF; therefore it is equal to it. But the angle at A is also equal to the angle at D; therefore the remaining angle at C is equal to the remaining angle at F. [I.32] Therefore the triangle ABC is equiangular with the triangle DEF. |
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