PLEASEEEE HELP MEEEE
Which if-then statement can the following biconditional statement be constructed from?
" An angle is a straight angle if and only if it measures 180 degrees. "
A. If an angle is straight, then it measures 180 degrees.
B. An angle measures 180 degrees if and only if it is a straight angle.
C. If a straight angle measures 180 degrees, then it is acute.
D. All angles are straight angles.