Elementary plane geometry : inductive and deductive / by Alfred Baker (1903)
Baker, Alfred, 1848-1942 · Toronto : Gage · leaf 139
9 3224 DE 32 X 59 = 444. 2. If level ground can be found extending out fromthe base of a tree, or other vertical object, its heightmay be found as follows: Let two rods, AB and CD, be placed upright in theground, at such distance apart that the eye sees thetops (B and D) of the rods and the top (F)… … A CSuppose AC = BG = 11, CE = GH = 43, AB=:13, CD = 20.Then by similar triangles BGD, BHF HF = J_ HF 115 54 = 34 1^ 43+11 115 11 Then height of object, EF = 34A- +13 = 47-A-. 3. Suppose we wish to find the distance of an objectB from A, without going over the distance AB with asurveyors chain or…
Geometry, Plane
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