A source book of problems for geometry, based upon industrial design and architectural ornament (1912)
Sykes, Mabel, 1868-, Slaught, H. E. (Herbert Ellsworth), 1861-1937, Lennes, N. J. (Nels Johann), 1874- · Boston, Allyn and Bacon · leaf 165
er of the semicircle, prove that Z A OC is onehalf a right angle. 3. Construct the square with CD as diagonal. 4. li AO = r, find the area of the square CD. Ans.^(Z -2V2). 5. If ^C = a, find the area of the figure bounded by the arc ADBand the tangents AC and BC. Ans. - (4 - ir). E 163. In Fig. 131… … EXERCISES 1. Show how to find the center of the circle ADB. Suggestion. — Erect perpendiculars to .4C and CB at A and B,respectively. 2. Prove that A OBC is a square. 3. Is the problem, To construct a circle tangent to the sides of anangle at given points on these sides, generally possible? Why is…
Geometry · Decoration and ornament
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