A treatise on special or elementary geometry (1877)
Olney, Edward, 1827-1887, Olney, Edward, 1827-1887. Elements of trigonometry, plane and spherical · New York : Sheldon · leaf 53
75, Prob,—To maJce tioo triangles jiist alike. … Solution.—There are three ways of doing this: \Ht Way.—Suppose I have any triangle, as ABC,and want to make another just like it. I first drawan arc measuring any one of the angles, as A, of thegiven triangle. Then I make an angle D equal tothe angle A, and draw the sides De and D/. Now Imeasure DE…
Geometry · Trigonometry
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