A quadrilateral having four right angles is called a rectangle.
a square
It is a quadrilateral, all of whose vertices are right angles. Recht = German for right so rechtangle -> rectangle.
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).
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
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.
Squa
Yes. It is still a quadrilateral as long as it still has four sides, and they can be congruent if all of the sides are equal. It does not mean that All of the angles have to be right.