a square
All quadrilateral have four angles. It is possible that all four angles are right angles, even if the quadrilateral is not a square (this would be a rectangle).
It is a quadrilateral, all of whose vertices are right angles. Recht = German for right so rechtangle -> rectangle.
A rectangle is a quadrilateral whose adjacent sides meet at right angles. All other properties can be derived from these.
A rectangle or square.
This is a rectangle.
A quadrilateral with four right angles is a rectangle. If all its sides are the same then it is a square.
A square or rectangle.
No because a quadrilateral has 4 sides but doesn't have to have right angles. For example the. Trapezoid doesn't,t have right angles but it is a quadrilateral
Squa
The essential properties are that a rectangle is a quadrilateral whose sides met at right angles. There are many other properties but all of them follow from this.
A square.