. The Decorator's assistant. First describe the circumference accordingto one of the preceding problems. Through thepoint A and the centre o draw a d. Make c dequal to one-fourth of the radius o c. Drawthe indefinite line a e perpendicular to a d and b draw d e, and the line a ewill be equal to the arc a b nearly. problem XIX. To describe an equilateral triangle upon agiven line. C. From the points a and b as centi-es, andwith the distance a b in your compasses,describe arcs crossing each other in c. Draw c a, c b, and the figure a c b will be the tri-angle required. Note.—An isoscel
. The Decorator's assistant. First describe the circumference accordingto one of the preceding problems. Through thepoint A and the centre o draw a d. Make c dequal to one-fourth of the radius o c. Drawthe indefinite line a e perpendicular to a d and b draw d e, and the line a ewill be equal to the arc a b nearly. problem XIX. To describe an equilateral triangle upon agiven line. C. From the points a and b as centi-es, andwith the distance a b in your compasses,describe arcs crossing each other in c. Draw c a, c b, and the figure a c b will be the tri-angle required. Note.—An isosceles triangle may be formed in the samemanner, taking for radius the given length a b of one of theequal sides.
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Keywords: ., bookcentury180, booksubjectart, booksubjectdecorationandornament
