Question

Which of the following is a biconditional statement?

A. An angle is a right angle if and only if it has a measure of 90°.

B. If an angle is a right angle, then it has a measure of 90°.

C. If an angle does not have a measure of 90°, then it is not a right angle.

D. An angle is a right angle if it has an angle measure of 90°.

Answer 1

Is A the correct answer?

Answer 2

yup.
'if and only if'
that's the main characteristic of a biconditional :)

another thing you might watch out for is the phrase 'sufficient and necessary' that also means biconditional :)

Answer 3

Thanks! :)