tbtb
square
It is a square
A rectangle.
A quadrilateral can have four right angles.
tbtb
A quadrilateral with 4 right angles is a rectangle
square
square
It is a rhombus
It is a square
If it is a quadrilateral it cannot be "not a quadrilateral"!
A rectangle.
yes 4 right angles
A quadrilateral with 4 equal sides and 4 right angles is a square.
no
So sometimes yes A quadrilateral is a polygon with 4 sides. A rectangle is a parallelogram with 4 right angles. A quadrilateral is sometimes a rectangle. Here is an example of a quadrilateral that is not a rectangle: