The Elements of Geometry: Or, The First Six Books, with the Eleventh and Twelfth, of Euclid |
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Seite 85
Wherefore the triangle A B C is equiangular to the triangle DEF , and it is inscribed in the circle A B C. Q. E. F. Exercise . If a triangle be inscribed in one of two concentric circles , equiangular to a given triangle , it is ...
Wherefore the triangle A B C is equiangular to the triangle DEF , and it is inscribed in the circle A B C. Q. E. F. Exercise . If a triangle be inscribed in one of two concentric circles , equiangular to a given triangle , it is ...
Seite 130
The triangles ABC and D E F are equiangular , and the angle ABC is equal to the angle DEF , and the angle A CB to the angle DFE . At the points D and F , in the straight line DF , make the angle FD G equal to either of the angles B A C ...
The triangles ABC and D E F are equiangular , and the angle ABC is equal to the angle DEF , and the angle A CB to the angle DFE . At the points D and F , in the straight line DF , make the angle FD G equal to either of the angles B A C ...
Seite 138
Therefore the triangle G A B is equiangular K to the triangle FCD . Again , at the points G and B , in the straight line G B , make the angle BG H equal to the angle DFE ( I. 23 ) , and the angle G B H equal to the angle FDE .
Therefore the triangle G A B is equiangular K to the triangle FCD . Again , at the points G and B , in the straight line G B , make the angle BG H equal to the angle DFE ( I. 23 ) , and the angle G B H equal to the angle FDE .
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