23.
Which biconditional is NOT a good definition?
A whole number is odd if and only if the number is not divisible by 2.
A whole number is even if and only if it is divisible by 2.
An angle is straight if and only if its measure is 180.
A ray is a bisector of an angle if and only if it splits the angle into two angles.
1 answer
An angle is straight if and only if its measure is 180.