Sheraton, Thomas; Bensley, Thomas; Mathews, James; Bensley, Thomas [Bearb.]; Mathews, James [Bearb.]; Terry, George [Bearb.]; Jordan, Jeremiah Samuel [Bearb.]; Wayland, L. [Bearb.]: The Cabinet-Maker And Upholsterer's Drawing-Book: In Three Parts (London: Printed For The Author, By T. Bensley; And Sold By J. Mathews ... C. Terry ... J.S. Jordan ... L. Wayland ... And By The Author, 1793)

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No. 4, is a Rhomboides, a figure which bears the fame affi-
nity to a parallelogram that a rhomb does to a geometrical
fquare. A rhomboides has its fides and ends parallel to each
other, but its angles differ the fame as thofe of the rhomb;
and therefore a rhomboides is a parallelogram moved out of
its proper form.
No. 5, is a Trapezoid, which has four fides, two of which
are parallel, and two not, the fame as the feats of fome chairs*
No. 6, a Trapezium, containing four fides,. which are all
unequal, and none of them parallel.
Thefe fix figures, being all of them bounded by four right
lines, are, by geometricians, called quadrangular or quadrilateral
plain figures.
Of various Triangles.
No. 7, is an Equilateral Triangle, fo called becaufe all its
fides are equal to one another; and, as every triangle contained
under three equal fides, whether circular or mixed, are called
equilateral, fo the figures u, 12, 15, are alfo of that denomi-
nation.
Ncn.