"a parallelogram is a rectangle if and only if it has a right angle."
if this statement...
Mathematics, 29.01.2020 10:54 rouna
"a parallelogram is a rectangle if and only if it has a right angle."
if this statement is true, then which of the following statements must also be true?
a. a parallelogram is not a rectangle if and only if it does not have a right angle. b. a parallelogram is a rectangle if and only if it does not have a right angle.
c. a parallelogram is not a rectangle if and only if it has a right angle.
d. a parallelogram has a right angle if and only if it is not a rectangle.
Answers: 1
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