Is a quadrilateral is a rectangle?

Answer 1

A quadrilateral is any 4 sided shape which includes a rectangle

Answer 2

Yes, although not all quadrilateral are rectangles.

Answer 3

Yes, a rectangle is a quadrilateral.
Quadrilateral means 'four sides,' hence a four sided figure such as a rectangle would be considered a quadrilateral.

Answer 4

Yes a rectangle is a 4 sided quadrilateral

Answer 5

No.