Which biconditional is not a good definition?

a whole number is even if and only if it is divisible by 2.

a ray is a bisector of an angle of and only if it splits the angle into two angles.

an angle is straight if and only if it’s measure is 180.

a whole number is odd if and only if the number is not divisible by 2.

A ray is a bisector of an angle of and only if it spilts the angle into two

Step-by-step explanation: Why is this not correct?. This question asks  if it splits into two angels, and that's not right, because "bisect" clearly means spliting the angle into two congruent angles.

(Sandra your answer clerk: Hi Mia, hope this answer helped you! <3)

A ray is a bisector of an angle if and only if it splits the angle into two angles.  

answer: a

step-by-step explanation:

if xy ~ yz therefore xy would be the same length as yz

answer: was that a question or answer?

step-by-step explanation: