Inside Out Library
Elements of geometry : containing books I to III (1886)
Smith, J. Hamblin · Toronto : W.J. Gage · leaf 170
t line. V.x. 7. Draw a straight line cutting two concentric circles,co that tin- part of it which is intercepted by the circumferenceof the greater may be twice the part intercepted by the circum-ference of the L Book III.] PROrOSlTTOX XXXII. 163 Proposition XXXil. Theorem.If a straight li e towh a… … Let the st. line AB touch the 9 CDEF in F.Draw the chord FD, dividing the ©into segments FCD, FED.Then mud z DFB= z in segment F< !>,and 1 DFA= z in segment FED.From F draw the chord EC ±.to AB. Then FC is a diameter of the • , III. 19. Take any pt. E in the arc FED, and join FE, ED.…Geometry
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