A Quadrilateral has two diagonals. IF the quadrilateral is a rectangle, then the two diagonals are equal in length.
A quadrilateral has 4 sides
A quadrilateral has 2 diagonals.
A quadrilateral need not have any vertical sides.
A quadrilateral has 4 sides.
the same as a regular quadrilateral, 4
number of sides of a quadrilateral= 4
There are 4 interior angles in a quadrilateral
A quadrilateral has 4 line segments
4
All trapezoids must be quadrilateral. And, as the name suggests a quadrilateral has four sides.
Infinitely many points are contained within a non-degenerate quadrilateral.
http://en.wikipedia.org/wiki/Quadrilateral It's 4.