A quadrilateral ABCD has four right angles. The diagonals are perpendicular.
Based on the given properties of the quadrilateral ABCD, which of these is a valid conclusion?

A. Quadrilateral ABCD must be a square.
B. Quadrilateral ABCD must be a rectangle
C. Quadrilateral ABCD must be a square or a rectangle.
D. Quadrilateral ABCD must be a rectangle or a rhombus

Question

A quadrilateral ABCD has four right angles. The diagonals are perpendicular. 
 Based on the given properties of the quadrilateral ABCD, which of these is a valid conclusion? 

A. Quadrilateral ABCD must be a square. 
  B. Quadrilateral ABCD must be a rectangle
  C. Quadrilateral ABCD must be a square or a rectangle. 
 D. Quadrilateral ABCD must be a rectangle or a rhombus

anonymous · Answer

I think its C.....

anonymous · Answer

The key to this questions is "The diagonals are perpendicular". If you have square and you draw a line from each corner to the center, it makes a perfect cross. Does this happen with a rectangle?