Posted by Bart on .
Write the negation of the following:
Every rectangle with four equal sides is a square.
A) No rectangle with four equal sides is not a square.
B) Every square with four equal sides is not a rectangle.
C) Every rectangle with four equal sides is not a square.
D) No square with four equal sides is a rectangle.
I think the answer is B

math 
PsyDAG,
All squares are rectangles, but not all rectangles are squares. Although they should not be using a doublenegative, A means the same as "A rectangle with four equal sides is a square."