Elementary plane geometry : inductive and deductive / by Alfred Baker (1903)
Baker, Alfred, 1848-1942 · Toronto : Gage · leaf 140
DEAD BCAB or DE m ^^^ and the accuracy of the construction, measurementsand calculation tested by measuring DE with thedividers and scale. 5. The proportionality of the sides of similar tri-angles may be employed to reduce or enlarge a figureto any scale. … Suppose we wish to obtain a figure the same shapeas ABC . . . , but with linear dimensions half those ofABC . . . Take a line OAA, with OA = AA. From0 draw a number of lines OA, OB, . . . With theparallel rulers obtain B, through AB being parallelto AB; also C, through AC being parallel to AC;…
Geometry, Plane
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