Draw a quadrilateral with 4 square corners and opposite sides the same length. What is the name of this quadrilateral? Remember how an index card or any book can help. Please I need to explain and Answer..

To answer this, you will draw either a rectangle or a square.  Both of these will give you 4 square (90 degree angles) corners and opposite sides that are congruent.

_______________________
|                                         |
|                                         |
|                                         |
|                                         |

or 

____________
|                     |
|                     |
|                     |
|                     |
|                     |