Yes.
rhombus
parallellogram and rhombus
The opposite sides of a rhombus must be parallel to one another. And that is the defining characteristic of a parallelogram.
A rhombus or rhombis a quadrilateral whose four sides all have the same length - wikipediaA parallellogram doesn't need to have sides of the same length. Only the parallel sides have to be equally long.So the answer is noA rhombus will always be a parallellogram though.
A quadrilateral may have all 4 angles different if it is not a square, rectangle, rhombus, rhomboid, rectangular trapezoid, isosceles trapezoid, or parallellogram.
Parallellogram - 2000 is rated/received certificates of: Belgium:KT
Since you know that it is a parallelogram (not parallellogram!) you already know that the opposite sides are mutually parallel. All you need to do is to establish that any pair of adjacent sides are of equal length, or equivalently, the squares of these lengths are equal. The squared length of the line AB where A = (p,q) and B = (r,s) is (p - r)^2 + (q - s)^2.
No, a parallellogram has the same both "top" and "bottom" size. A trapezoid has diffrent both "top" and "bottom" size.
A quadrilateral is a polygon ("many angled") with 4 sides that intersect. Since a circle doesn't have any sides, it cannot be a polygon. A square, a trapezoid, a parallellogram, a rhombus, or a rectangle would all be examples of shapes that ARE polygons.
The cast of Parallellogram - 2000 includes: Christoffel de Gruyter Marianne Thys Erik Thys
None.