Elements of geometry, containing books I and II with exercises and notes (1882)
Smith, J. Hamblin (James Hamblin), 1829-1901 · Toronto : Gage · leaf 74
gthrough A but AD is || to BF, .: ADk 11 to BF. Q. E. D. Ex. 1. The straight line, joining the points of bisection oftwo sides of a triangle, is parallel to the base, and is equal tohalf the base. Ex. 2. The straight lines, joining the middle points of thesides of a triangle, divide it into four… … Let the O ABCB and the a EBC be on the same hase BCand between the same ||s AE, BC. TJien must EJ ABCD he double of a BBC. Join A C. Then aABC= a EBC, v they are on the same base andbetween the same ||s ; I. 37. and 0 ABCD is double of A ABC, . AC is a diagonal ofABCD; I. 34. .-. ZZ7 ABCD is double…
Geometry
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