(. 54 )
fide of the triangle, and from a right line turn an arch each
way, as Fig. 2, Plate I. and their feCtion, as at E, by lines drawn
to it, completes the figure.
Then if a right line be drawn parallel to CD at E, and c d
O X 7
be laid on this line, fuppofed to be dtawn, it will complete the
Rhomb.
But if a Rhomb be required to be drawn, whofe oblique
fides are wanted to be inclined thirty-feven degrees and a half,
take the radius of the protractor and from the center G fweep
an arch, as 0 o. Fig. 16. Draw G 0, and take from the protractor
thirty-feven degrees and a half, and lay it from 0 to 0. Let the
right line G 0 be the given fide of the Rhomb; and how the
other fides are to be drawn, reafon itfelf will dictate.
The Rhomboides, being of the fame fpecies of figure, is
eafily drawn by the fame rule. Nor is it requifite to defcribe
the method of drawing any other of the figures till we come to
the Pentagon, becaufe fome of them are variable, and thofe that
are not fo, are drawn by the fame rules that are applicable to
the Square, Rhomb, and Equilateral Triangle.
Prob.
fide of the triangle, and from a right line turn an arch each
way, as Fig. 2, Plate I. and their feCtion, as at E, by lines drawn
to it, completes the figure.
Then if a right line be drawn parallel to CD at E, and c d
O X 7
be laid on this line, fuppofed to be dtawn, it will complete the
Rhomb.
But if a Rhomb be required to be drawn, whofe oblique
fides are wanted to be inclined thirty-feven degrees and a half,
take the radius of the protractor and from the center G fweep
an arch, as 0 o. Fig. 16. Draw G 0, and take from the protractor
thirty-feven degrees and a half, and lay it from 0 to 0. Let the
right line G 0 be the given fide of the Rhomb; and how the
other fides are to be drawn, reafon itfelf will dictate.
The Rhomboides, being of the fame fpecies of figure, is
eafily drawn by the fame rule. Nor is it requifite to defcribe
the method of drawing any other of the figures till we come to
the Pentagon, becaufe fome of them are variable, and thofe that
are not fo, are drawn by the fame rules that are applicable to
the Square, Rhomb, and Equilateral Triangle.
Prob.