Elements of geometry : containing books I to III (1886)
Smith, J. Hamblin · Toronto : W.J. Gage · leaf 17
ers q. e. f. at the end of a Problem stand for Quodarai faciendum. The letters q. e. d. at the end of a Theorem stand for Quoderat demonstrandum. In the marginal references : Post, stands for Postulate. Def. Definition. Ax Axiom. I. l Book I. Proposition L Hyp. stands for Hypothesis, rt/■position,… … Let A B be the given st. lm>. It is required to detcrHh an equilat. ^on AB With centre .1 and distance .1/; • BCD. Post 3. litre B md distance /..I .1. -.-, >,. : .\>From thept. f. m which the • a cut one another, draw the st. lines CA, CB.Then will I />< be an equilat, AFor Post. I.…
Geometry
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