Parallelogram vs. Rhombus

Parallelogramnoun

(geometry) A convex quadrilateral in which each pair of opposite edges are parallel and of equal length.

Parallelogramnoun

either of two rectangular areas (respectively the large parallelogram and the small parallelogram) abutting the goal line in front of the goal. (Since 1986 officially named the large rectangle and small rectangle, though the older names are still occasionally used.)

Parallelogramnoun

A right-lined quadrilateral figure, whose opposite sides are parallel, and consequently equal; - sometimes restricted in popular usage to a rectangle, or quadrilateral figure which is longer than it is broad, and with right angles.

Parallelogramnoun

a quadrilateral whose opposite sides are both parallel and equal in length

Parallelogram

In Euclidean geometry, a parallelogram is a simple (non-self-intersecting) quadrilateral with two pairs of parallel sides. The opposite or facing sides of a parallelogram are of equal length and the opposite angles of a parallelogram are of equal measure.

Rhombusnoun

Any of several flatfishes, including the brill and turbot, once considered part of the genus Rhombus, now in Scophthalmus.

Rhombusnoun

Snails, now in genus Conus or family Conidae.

Rhombusnoun

(geometry) A parallelogram having all sides of equal length.

Rhombusnoun

Same as Rhomb, 1.

Rhombusnoun

a parallelogram with four equal sides; an oblique-angled equilateral parallelogram

Rhombusnoun

a quadrilateral all of whose sides have the same length.

Rhombus

In plane Euclidean geometry, a rhombus (plural rhombi or rhombuses) is a quadrilateral whose four sides all have the same length. Another name is equilateral quadrilateral, since equilateral means that all of its sides are equal in length.