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ctangle, or quadrilateral figure which is longer than it is broad, and with right angles. Parallelogram of velocities, forces, accelerations, momenta, etc. (Mech.), a parallelogram the diagonal of which represents the resultant of two velocities, forces, accelerations, momenta, etc., both in quantity and direction, whe…

Of or pertaining to a parallelogram; parallelogrammic.

Having the properties of a parallelogram. [R.]

the summit, or to the side parallel to the base; as, the altitude of a triangle, pyramid, parallelogram, frustum, etc.

or the mind. A circle is more beautiful than a square; a square is more beautiful than a parallelogram. Lord Kames.

c or angle (Geom.), the difference between that arc or angle and 90º. -- Complement of a parallelogram. (Math.) See Gnomon. -- In her complement (Her.), said of the moon when represented as full.

A solid body which may be generated by the rotation of a parallelogram round one its sides; or a body of rollerlike form, of which the longitudinal section is oblong, and the cross section is circular.

The space included between the boundary lines of two similar parallelograms, the one within the other, with an angle in common; as, the gnomon bcdefg of the parallelograms ac and af. The parallelogram bf is the complement of the parallelogram df.

Having long sides especially, having the form of a long parallelogram. Nineveh . . . was of a longilateral figure, ninety-five furlongs broad, and a hundred and fifty long. Sir T. Browne.

A solid, the faces of which are six parallelograms, the opposite pairs being parallel, and equal to each other; a prism whose base is a parallelogram.

t the side necessary to complete the figure represents the resultant of those forces. Cf. Parallelogram of forces, under Parallelogram.

ose bases or ends are any similar, equal, and parallel plane figures, and whose sides are parallelograms.

hat quantity. -- Reciprocal figures (Geom.), two figures of the same kind (as triangles, parallelograms, prisms, etc.), so related that two sides of the one form the extremes of a proportion of which the means are the two corresponding sides of the other; in general, two figures so related that the first corresponds i…

A four-sided figure having only right angles; a right-angled parallelogram.

An equilateral parallelogram, or quadrilateral figure whose sides are equal and the opposite sides parallel. The angles may be unequal, two being obtuse and two acute, as in the cut, or the angles may be equal, in which case it is usually called a square.

An oblique-angled parallelogram like a rhomb, but having only the opposite sides equal, the length and with being different.

A parallelogram having four equal sides and four right angles.

Of or pertaining to a tetragon; having four angles or sides; thus, the square, the parallelogram, the rhombus, and the trapezium are tetragonal fingers.