Question

Which biconditional is NOT a good definition ?

a.) A whole number is even if and only if it is divisible by 2
b.) A whole number is off if and only if the number is divisible by 2
c.) A ray is a bisector of an angle if and only if it splits the angle into two angles
d.) An angle is straight if and only if it's measure is 180

Answer 1

d

Explanation:

An angle is straight if and only if its measure is 180