The Elements of Geometry: Or, The First Six Books, with the Eleventh and Twelfth, of Euclid |
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Σελίδα 85
Therefore the remaining angle BAC is equal ( I. 32 and Ãx . 1 ) to the remaining angle EDF . 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 .
Therefore the remaining angle BAC is equal ( I. 32 and Ãx . 1 ) to the remaining angle EDF . 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 .
Σελίδα 130
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 or EDF ( I. 23 ) ; and the angle DFG equal to the angle A CB . Because the remaining angle at B is equal to the remaining angle at ...
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 or EDF ( I. 23 ) ; and the angle DFG equal to the angle A CB . Because the remaining angle at B is equal to the remaining angle at ...
Σελίδα 138
Be- cause the remaining angle A G B is equal to the remaining angle CFD ( I. 32 , and Ax . 3 ) . 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 ...
Be- cause the remaining angle A G B is equal to the remaining angle CFD ( I. 32 , and Ax . 3 ) . 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 ...
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