Not true.
Every parallelogram must, by definition, be a quadrilateral.
no
yes
Yes, every trapezoid is a quadrilateral.
It is true that every trapezoid is a quadrilateral
No not every quadrilateral can be a regular polygon.
No, not every quadrilateral is a trapezoid, although a trapezoid is also a quadrilateral because it has four sides.
every quadrilateral will tessellate the plane? true or false
Yes every trapezoid is a quadrilateral because they have 4 sides
Every wall, floor, and ceiling of a traditional house, and of every room in it, is a quadrilateral.
Improved Answer:-Yes every trapezoid is a quadrilateral because they have 4 sides
Yes- a square is a special kind of quadrilateral.