Math and Arithmetic

Geometry

# What is the difference between a parallelogram and a quadrilateral?

###### Wiki User

###### January 08, 2011 11:09PM

**Any** flat shape with four sides is a quadrilateral.

But in order to be a parallelogram, each of its sides must be parallel

to the side that doesn't touch either end of it.

## Related Questions

###### Asked in Geometry

### Conditions which guarantee that a quadrilateral is a parallelogram?

Theorem A:
A quadrilateral is a parallelogram if its opposite sides are
congruent.
Theorem B:
A quadrilateral is a parallelogram if a pair of opposite sides
is parallel and congruent.
Theorem C:
A quadrilateral is a parallelogram if its diagonals bisect each
other.
Theorem D:
A quadrilateral is a parallelogram if both pairs of opposite
angles are congruent.