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parallelogram    
n. 平行四边形

平行四边形

parallelogram
n 1: a quadrilateral whose opposite sides are both parallel and
equal in length [ant: {trapezium}]

Parallelogram \Par`al*lel"o*gram\, n. [Gr. ?; ? parallel ? to
write: cf. F. parall['e]logramme. See {Parallel}, and
{-gram}.] (Geom.)
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.
[1913 Webster]

{Parallelogram of velocities}, {parallelogram of forces},
{parallelogram of accelerations}, {parallelogram of momenta},
etc. (Mech.), a parallelogram the diagonal of which
represents the resultant of two velocities, forces,
accelerations, momenta, etc., both in quantity and
direction, when the velocities, forces, accelerations,
momenta, etc., are represented in quantity and direction
by the two adjacent sides of the parallelogram.
[1913 Webster]


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  • Parallelogram - Wikipedia
    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
  • Parallelogram - Definition, Properties, Types, and Formulas
    Learn what a parallelogram is in math, its types, properties, formulas, and how to identify and calculate area, height, and perimeter
  • Parallelogram - Math is Fun
    (Jump to Area of a Parallelogram or Perimeter of a Parallelogram) A parallelogram is a flat shape with opposite sides parallel and equal in length
  • Parallelogram - Shape | Definition | Formulas, Properties, Examples
    A parallelogram is defined as a quadrilateral in which both pairs of opposite sides are parallel and equal The angle between the adjacent sides of a parallelogram may vary but the opposite sides need to be parallel for it to be a parallelogram
  • Parallelogram | Definition, Properties, Area, Examples | Britannica
    A parallelogram is a four-sided plane figure in which both pairs of opposite sides are parallel and equal It is a quadrilateral in which the opposite angles are equal and the diagonals bisect each other Rectangles, rhombuses, and squares are all special types of parallelograms
  • Parallelogram - Definition, Types, Properties, Shapes, Examples
    Parallelogram is a quadrilateral in which opposite sides are parallel and equal in length Learn the definition, different types, how to find area, examples more
  • Parallelograms. Properties, Shapes, Sides, Diagonals and Angles-with . . .
    To create a parallelogram just think of 2 different pairs of parallel lines intersecting ABCD is a parallelogram Click on the button below to turn the pure parallel lines into a parallelogram Triangles can be used to prove this rule about the opposite angle
  • Parallelogram - Math. net
    A parallelogram is a quadrilateral with two pairs of opposite, parallel sides In the figure below are 4 types of parallelograms A parallelogram has 4 sides The opposite sides of a parallelogram are equal in length In the figure below, side BC is equal to AD in length and side AB is equal to CD in length
  • Parallelogram - GeeksforGeeks
    A parallelogram is a two-dimensional geometrical shape whose opposite sides are equal in length and are parallel The opposite angles of a parallelogram are equal in measure, and the sum of adjacent angles of a parallelogram is equal to 180 degrees
  • PARALLELOGRAM Definition Meaning - Merriam-Webster
    The meaning of PARALLELOGRAM is a quadrilateral with opposite sides parallel and equal How to use parallelogram in a sentence





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