Question

Which is not a correct biconditional statement:

a) If and only if I am right will I be happy.
b) We have a linear pair if and only if we have adjacent angles on a line.
c) pt a
d) Angles sum to 90° iff they are complementary.

Answer 1

The correct biconditional statement is c) pt.

Step-by-step explanation:

The correct biconditional statement is c) pt. Option a) is a correct biconditional statement because it states that being both right and happy are dependent on each other. Option b) is also a correct biconditional statement because having a linear pair and having adjacent angles on a line are equivalent conditions. Option d) is a correct biconditional statement because angles that sum to 90° are complementary to each other.