a rectangle
A shape that has four right angles is a rectangle. If all four sides are equal in length, then it is a square.
A square shape for example has 4 right angles and a right angle is 90 degrees.
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).
A Square # a square
A shape with 4 right angles and 4 equal sides is a square. ==========================
A right angle is 90 degrees and the 4 interior angles of a square and a rectangle are all right angles.
It is a square
Both statements are not always true. A square is a rectangle (a shape four sides and four corners which are all right angles) but a rectangle is not necessarily a square (a shape with four equal sides and four corners that are all right angles).
square
No it is impossible, only quadrilaterals have all side that are equal and or all right angles, like a square or a rectangle.
You don't tell us enough information. In a square, there are four sides and four angles. The sides are all equal and the angles are all right angles. In a rectangle, there are four sides and four angles The opposite sides are equal and the angles are all right angles. There is no other shape in which all angles are right angles.