Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 26
Then in ^ABD, v BD = BA, .. i BAD= l BDA,And in ^ACD, v CD = CA, .. i CAD= z CDA,.. sum of L s BAD, 0.42)=sum of / s BDA, CDA,that is, aBAC= I BDC. Hence we see, referring to the original triangles, that z BAC= L EDF.,., by Prop. 4. the triangles are equal :■ ill respects. LA.L A. Ax. 2. Book… … Then in t^ABD, v BD=BA, :. z BAD= l BDA, I. A.And in aACD, . CD=CA, .: l CAI)= l CDA, I. A.Hence since the whole angles BAD, BDA are equal,and parts of these CAD, CDA are equal... the remainders BAC, BDC are equal. Ax. 3. Then, as in Case I., the equality of the original trianglesmay be proved.…
Geometry
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