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. A ray is a bisector of an angle if and only if it splits the angle into two angles.
C. A whole number is even if and only if it is divisible by 2.
D. An angle is straight if and only if its measure is 180.

Question

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. A ray is a bisector of an angle if and only if it splits the angle into two angles.
	C. A whole number is even if and only if it is divisible by 2.
	D.  An angle is straight if and only if its measure is 180.

anonymous · Answer

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