Elements of geometry : containing books I to VI and portions of books XI and XII of Euclid, with exercises and notes (1881)
Smith, J. Hamblin (James Hamblin), 1829-1901, Kirkland, Thomas, 1835-1898 · Toronto : W.J. Gage · leaf 291
arc EF. q. E. D. Cor. In the same circle, angles, whether at the centres orthe circumferences, have the same ratio aa the arcs which sub-tend them : and so also have the sectors. ;84 EUCLIDS ELEMENTS. [Book VI. Proposition B. Theorem. If an angle of a triangle be bisected by a straight line,… … J-: Let L BAG of the a ABC be bisected by the st. line AB. Then rect. BA, AC = rect. BD, DC together with sq. on AD. Describe the 0 ABC about the a , III. b. p. 135. produce AD to meet the Oce in E, and join EC. Then •.• z BAD = i CAE, Hyp. and z ABD = z AEC, in the same segment, III. 21. .. A ABD…
Geometry · Geometry, Plane
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