Which shape has four right angles?

• A. Trapezoid
• B. Rectangle
• C. Parallelogram
• D. Kite

Answer: (B)

Four right angles define a rectangle. A right angle is 90 degrees, and a rectangle is a quadrilateral where every interior angle is a right angle, with opposite sides parallel and equal in length. Among the shapes listed, only the rectangle is guaranteed to have all four angles at 90 degrees. The trapezoid may have right angles, but not necessarily all four; the parallelogram can have angles that aren’t 90 degrees; the kite’s angles can vary and aren’t required to be right angles. (A square also has four right angles, but it isn’t one of the listed shapes.)