Which term refers to a parallelogram with four right angles?

• A. Open Figure
• B. Angle
• C. Parallelogram
• D. Rectangle

Answer: (D)

A four-sided figure that has opposite sides parallel is a parallelogram. If every corner is a right angle, meaning each angle measures 90 degrees, that shape is called a rectangle. So the term that fits a parallelogram with four right angles is rectangle because it describes both the parallelogram nature and the presence of right angles at all corners. The other options don’t match: an open figure isn’t a standard shape name, an angle is a measure of space between two lines rather than a shape, and a parallelogram can have angles that aren’t right angles, so it isn’t necessarily a rectangle.