Which biconditional is not a good definition?
A. A whole number is odd if and only if the number is not divisible by 2.
B. An angle is straight if and only if it is divisible by 2.
C. A whole number is even if and only f it is divisible by 2.
D. A ray is a bisector of an angle if and only if it splits the angles into two angles.
1 answer
B. An angle is straight if and only if it is divisible by 2.